Joint Admission and Matriculation Board
JAMB
PHYSICS
Past Questions
Years:
 2010
2011
2012
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2010 JAMB PHYSICS QUESTIONS
1. Which Physics Question Paper
statement that is true about this
Type is given to you?
motion is that, the car
A. Type A
A. decelerates between points F
B. Type B
and H
C. Type C
B. accelerates between points F
D. Type D
and G
C. has a constant speed between
2. Two cars moving in the same
points E and
direction have speeds of 100kmh-
D. has no acceleration between
1
point F and G.
and 130kmh-1. What is the
velocity
of
the
faster
car
as
measured by an observer in the
4. A stone and a feather dropped
slower car?
from the same height above the
earth
surface.
Ignoring
air
A. 130 kmh-1
resistance, which of the following
B. 230 kmh-1
is correct?
C. 200 kmh-1
D. 30 kmh-1
A. The stone and feather will both
reach the ground at the same
3.
time.
B. The stone will reach the ground
first
C. The feather will reach the
ground first
D. The feather will be blown away
The
diagram
above
velocity-time graph. The
shows
a
by the wind while stone will drop
steadily.
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5. A car moves with an initial
Which of the following options
velocity of 25 ms-1 and reaches a
represents
velocity of 45 ms-1 in 10s. What
equilibrium?
positions
of
stable
is the acceleration of the car?
A. II, V and VIII
A. 5 ms-2
B. I, II and VII
B. 25 ms-2
C. III, VI and IX
C. 20 ms-2
D. III, IV and VIII
D. 2 ms-2
8. A bob of weight 0.1N hangs
6.
An
object
is
weighed
at
different locations on the earth.
What
will
be
the
from a massless string of length
50cm.
right
observation?
A variable horizontal force which
increases from zero is applied to
A. Both the mass and weight vary
pull the bob until the string makes
B. The weight is constant while
an angle of 600 with the vertical.
the mass varies
The work done is
C. The mass is constant while the
weight varies
A. 0.250 J
D. Both the mass and weight are
B. 0.025 J
constant.
C. 0.050 J
D. 0.500 J
7.
9. The surfaces of conveyor belts
are made rough so as to
The
diagram
above
represents
balls in an undulating surface.
A. prevent the load from slipping
B. make them stronger
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C. enable them to carry more load
A. 200 N
D. protect them while carrying
B. 100 N
load.
C. 150 N
D. 300 N
10. A machine of velocity ratio 6
requires an effort of 400N to raise
13. The accurate measurement of
a load of 800N through 1m. Find
the relative density of a substance
the efficiency of the machine.
in its powered form is done with a
beam balance and
A. 50%
B. 22.2%
A. an eureka can
C. 33.3%
B. a burette
D. 55.6%
C. a pipette
D. a density bottle.
11.
If
a
wire
30cm
long
is
extended to 30.5cm by a force of
14.
300N. Find the strain energy of
instrument used in measuring
A
hydrometer
is
an
the wire.
A. density of liquid
A. 7.50 J
B. relative density of a liquid
B. 750.00 J
C. relative humidity of a liquid
C. 75.00 J
D. vapour pressure of a fluid
D. 0.75 J
15.
One
special
advantage
of
12. In a hydraulic press, the
alcohol water over mercury as a
pump piston exerts a pressure of
thermometric liquid is its
100 Pa on the liquid. What force
is exerted in the second piston of
A. low freezing point
crosssectional area 3 m2?
B. low boiling point
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C. high specific heat capacity
18. Heat is radiated by all hot
D. low density.
objects in the form of
16. Two metals P and Q of lengths
A. light energy
l1 and l2 are heated through the
B. solar energy
same temperature difference. If
C. infrared ray
the
D. x-rays.
ratio
of
the
linear
expansivities of P to Q is 2:3 and
the ratio of their lengths is 3:4.
19. If a container is filled with ice
What is the ratio of increase in
to the brim, what happens to the
lengths of P to Q?
level
of
water
when
the
ice
completely melts?
A. 5:7
B. 2:1
A.
C 1:2
outflows.
D. 7:5
B. The level of water drops.
The
water
in
the
glass
C. The level of water remains
17. The density of a certain oil on
unchanged
frying becomes 0.4kgm-3 with a
D. The level of water goes up.
volume of 20m-3. What will be its
initial
volume
when
its
initial
20. The small droplet of water
density is 0.8kgm-3 assuming no
that forms on the grass in the
loss of oil due to spillage?
early hours of the morning is
A. 10 kgm-3
A. dew
B. 5 kgm-3
B. mist
C. 8 kgm-3
C. fog
D. 12 kgm-3
D. hail.
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21.
A
vapour
is
said
to
be
C. surface area.
saturated when
D. nature of the surface.
A. a dynamic equilibrium exists
24. The wavelength of a wave
such that more molecules return
travelling
to the liquid than are leaving it.
420ms-1
B.
the
vapour
pressure
is
period?
C. the temperature of the vapour
A. 1.0s
varies
B. 0.1s
D. a dynamic equilibrium exists
C. 0.5s
between liquid molecules and the
D. 1.2s
with
is
a
42m.
velocity
What
is
of
its
atmospheric
vapour molecules.
25. The sound of an electric bell
22. The pressure of one mole of
dies down slowly when air is
an ideal gas of volume 10-2m3 at a
slowly pumped out from a bottle
temperature of 27⁰C is ..... [Molar
because
gas constant = 8.3 Jmol -1K-1]
A. sound cannot pass through the
A. 2.24 x 104 Nm-2
bottle
B. 2.24 x 105 Nm-1
B. sound can pass through a
C. 2.49 x 105 Nm-1
vacuum
D. 2.49 x 104 Nm-1.
C.
sound
needs
a
material
medium
23. Which of the following has no
D.
effect on radiation?
becomes greater in the bottle.
the
A. density.
B. temperature.
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wavelength
of
sound
26. During a thunderstorm, the
29. An object 4 cm high is placed
sound is heard over a long time.
15 cm from a concave mirror of
This phenomenon is referred to as
focal length 5 cm. The size of the
image is
A. refraction of sound
B. reverberation
A. 3 cm
C. superposition
B. 5 cm
D. diffraction of sound.
C. 4 cm
D. 2 cm
27. The velocity of sound in air at
16⁰C is 340ms-1. What will it be
30. An object is embedded in a
when the pressure is doubled and
block of ice, 10cm below the
its temperature raised to 127⁰C?
plane surface. If the refractive
index of the ice is 1.50, the
A. 4,000ms-1
apparent
B. 160,000 ms-1
below the surface is
depth
of
the
object
C. 8,000 ms-1
D. 400 ms-1
A. 67 cm
B. 7.63 cm
28. In comparing the camera and
C. 7.50 cm
the human eye, the film of the
D. 2.50 cm
camera functions as the
31. Which of the following is used
A. iris
for
the
correction
B. pupil
sightedness?
C. cornea
D. retina
A. Concave lens.
B. Concave mirror.
C. Convex mirror.
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of
short-
A. 6.90 x 10-6 J
D. Convex lens.
B. 6.90 x 10-4 J
32. Dispersion occurs when white
C. 2.52 x 10-4 J
light passes through a glass prim
D. 2.52 x 10-6 J
because of the
35. A cell of emf 12V and internal
A. different speeds of the colours
resistance 4Ω is connected to an
in the glass.
external resistor of resistance 2 Ω
B. high density of the glass.
Find the current flow.
C. defects in the glass.
D. different hidden colours in the
A. 4 A
glass.
B. 2 A
C. 3 A
33. When a positively charged rod
D. 5 A
is brought nearer the cap of a
positively charged
electroscope,
36.
the leaves divergence will.
A. converge
B. remain constant
C. diverge
D. be induced.
The
34.
Three
capacitors
of
capacitance, 2μF, 4μF and 8μF are
diagram
is
maintained
across
each
capacitor, the total energy stored
is
shows
a
balanced metre bridge the value
of x is
connected in parallel and a p.d of
6V
above
A. 66.7 cm
B. 25.0 cm
C. 33.3 cm
D. 75.0 cm
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37. Three 4Ω resistors connected
in
parallel
have
3
D. N 1,920.00.
potential
difference of 16V applied across
39. Power supply is transmitted at
them. What is the total current in
a
the circuit
current in order to
A. 12 A
A. increase the power supply
B. 8 A
B. prevent overheating of the coil
C. 10 A
C. make it travel fast
D. 14 A
D. make it pass through
very
high
voltage
and
low
the
transformers.
38.
40.
In
In the diagram above, a 200 W
bulb is lighted by a 240 V a.c
mains supply. If 1kWh is sold at
the diagram above, if
south-poles
of
two
at T and V will respectively be
A. north and south
B. south and south
A. N 192.00
B. N 1.92
magnets
stroke a steel bar, the polarities
N40, the cost of keeping the bulb
lighted for a day is.
the
C. north and north
D. south and north.
C. N 19.20
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41. A galvanometer with full-scale
B. 0°
deflection
C.
of
10mA
is
to
be
converted to a voltmeter with full-
D. °
scale deflection of 5 V. If a series
resistance of 498Ω is used for the
conversion, the resistance of the
galvanometer is
44.
In
electrolysis,
Faraday’s
a
graph
law
of
of
mass
deposited against the quantity of
electricity is plotted. The slope of
A. 2 Ω
the graph gives
B. 10 Ω
C. 5 Ω
A. the electrochemical equivalent
D. 1 Ω
B. the charge released
C. the current flowing
42. Two inductors of inductances
D. the energy released
5 mH and 15mH are connected in
series and a current of 5A flows
through them. The total energy
stored in the inductors is
the gas is pumped out so that
electricity is conducted at
A. 250.0 J
A. steady voltage
B. 50.0 J
B. high pressure
C. 62.5 J
C. high pressure
D. 500.0 J
D. low voltage.
43. In alternating current circuit
at resonance, the angle of lead or
lag is ___.
45. In a discharge tube, most of
46. The radioisotope
235
92U
decays
by emitting two alpha particles,
three beta particles and a gamma
ray. What is the mass and atomic
A.
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numbers of the resulting daughter
element?
A. 91 and 227
B. 92 and 238
C. 227 and 91
D. 215 and 88.
50. Which of the following is a
47. The ground state energy for a
pure semiconductor?
hydrogen atom is 5.44 x 10-19 J. If
an electron drops from zero to
A. Silicon
ground
B. Phosphorus
state,
calculate
the
frequency of the emitted radiation
C. Transistor
[h = 6.6 x 10-34 Js]
D. Carbon
A. 2.0 x 1016Hz
ANSWER KEYS:
B. 2.0 x 1015Hz
C. 5.0 x 1015Hz
1. B 2. D 3. D 4. A 5. D 6. C 7. C
D. 5.0 x 1016Hz
8. B 9. A 10. C 11. D 12. D 13.
D 14. A 15. D 16. C 17. A 18. C
48. Transistors are used for the
19. B 20. A 21. D 22. C 23. A
24. B 25. D
A. conversion of a.c. to d.c.
B. conversion of d.c. to a.c.
26. B 27. D 28. D 29. D 30. A
C. amplification of signals
31. A 32. A 33. C 34. C 35. B
D. rectification of signals.
36. C 37. A 38. A 39. B 40. C
41. A 42. A 43. A 44. A 45. B
49.
A
typical
transistor
characteristic is represented as
46. A 47. NO OPTION 48. C 49.
C 50. A
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2011 JAMB PHYSICS QUESTIONS
PAPER TYPE: C
A. X and Y will both be 500m from
the point of throw
1. Which Question Paper Type of
B. X and Y will be 500m from
Physics is given to you?
each other
C. Y will be 500 m ahead of X
A. Type A
D. X will be 500m ahead of Y.
B. Type B
C. Type C
4. A man standing on a lift that is
D. Type D.
descending
does
not
feel
any
weight because
2. A carpenter on top of a roof
20.m high dropped a hammer of
A. there is no gravitational pull on
mass 1.5kg and it fell freely to
the man in the lift
the ground. The kinetic energy of
B. the inside of the lift is air tight
the hammer just before hitting
C. the lift is in vacuum
the ground is ....... [g = 10ms-2]
D. there is no reaction from the
floor of the lift.
A. 450 J
B. 600 J
5.
C. 150 J
D. 300 J
3. Two balls X and Y weighing 5g
and
50kg
respectively
were
thrown up vertically at the same
time with a velocity of 100ms-1.
The diagram above shows two
How will their positions be one
vectors at right angles to each
second later?
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other. The value of the resultant
8.
vector is
A. 13.0 N
B. 14.0 N
The diagrams above show the
C. 10.0 N
positions of a cone. The position
D. 12.0 N.
which can be described as neutral
equilibrium is represented as
6. An object of mass 2kg moves
with a velocity of 10ms-1 round a
A. Y and X
circle of radius 4m. Calculate the
B. Z only
centripetal force on the object.
C. X only
D. Y and Z.
A. 40 N
B. 25 N
9.
C. 100 N
opened at both ends is placed in a
D. 50 N
liquid, the liquid will
7. If it takes an object 3s to fall
A. rise above the liquid level if the
freely
liquid does not wet the glass
to
certain
the
height,
ground
what
from
is
a
the
B.
If
a
tube of
remain
at
the
small
radius
same
level
distance covered by the object?
irrespective of whether the liquid
[g = 10ms-2]
wets the glass or not
C. fall below the liquid level if the
A. 60 m
liquid wets the glass
B. 90 m
D. fall below the liquid level if the
C. 30 m
liquid does not wet the glass.
D. 45 m.
10. I. Density of the liquid
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II. Depth below the surface of
10m.
the liquid.
machine is 40%, how much work
III. Surface area of the liquid
is done?
In which of the statement above
A. 120 J
will pressure be dependent?
B. 80 J
if
the
efficiency
of
the
C. 500 J
A. I and III only
D. 300 J.
B. I and II only
C. II and III only
13. Which of the following could
D. I, II and III.
be
effectively
used
to
reduce
friction?
11. I. High thermal capacity
II. High sensitivity
A. Petrol
III. Easy readability
B. Kerosene
IV.
Accuracy
over
a
wide
C. Grease
range of temperatures
D. Water.
From the statements above, the
14. A copper wire was subjected
qualities of a good thermometer
to a tensile stress of 7.7 x 107
are
Nm-2. Calculate the tensile strain
of the wire. [Young modulus =
1.1 x 1011Nm-2]
A. II, III and IV
B. I and II
C. I, II, III and IV
A. 2.2 x 10-4
D. I, III and IV.
B. 2.0 x 10-5
C. 7.0 x 10-3
12. A machine is used to lift a
D. 7.0 x 10-4
load of 20 N through a height of
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15. An object weighs 22kg in
18. The phenomenon that shows
water an 30kg in air. What is the
that increase in pressure lowers
up thrust exerted by the liquid
the melting point can be observed
on the object? [g = 10 ms-2]
in
A. 80 N
A. regelation
B. 50 N
B. sublimation
C. 520 N
C. condensation
D. 220 N.
D. coagulation.
16.
A
block
of
aluminium
is
19.
If
the
volume
of
a
gas
heated electrically by a 30 W
increases
heater. If the temperature rises
temperature
by 100˚C in 5 minutes, the heat
constant pressure, the gas obeys
steadily
as
the
decreases
at
capacity of the aluminium is
A. Charles’ law
A. 200 JK-1
B. Graham’s law
B. 900 JK-1
C. Boyle’s law
C. 90 JK-1
D. pressure law.
D. 100 JK-1
20. Steam burn is more severe
17. A perfect emitter or absorber
than that of boiling water because
of radiant energy is a
A. steam burn is dependent on
A. red body
relative humidity
B. conductor
B. steam burn is independent of
C. black body
relative humidity
D. white body.
C. steam possess greater heat
energy per unit mass
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D.
water
boils
at
a
higher
A. 0.40cm3
B. 0 14cm3
temperature
C. 0.12cm3
21. Which of the following types
D. 1.20cm3
of waves needs a medium for
propagation?
24. I. Change of state
II. Diffusion
A. X-rays
III. Radiation
B. Sound waves
IV. Osmosis
C. Light waves
D. Radio waves.
Which of the processes above can
be explained using the kinetic
22. The ground is always cold at
theory?
night because the
A. I, II and IV
A. atmosphere reflects the sun’s
B. I, II, III and IV
energy at night
C. I, II and III
B. atmosphere absorbs the sun’s
D. I, III and IV.
energy at night
C. earth radiates heat to the
25. When the human eye loses its
atmosphere at night
power
D. sun no longer shines at night.
detect is known as
23. A metal of volume 40cm3 is
A. long-sightedness
heated from 30⁰C to 90⁰C, the
B. short-sightedness
increase in volume is .....
C. presbyopia
[Linear expansivity of the metal=
D. astigmatism.
2.0 x 10-5K-1]
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of
accommodation,
the
26.
A
length
frequency
of
of
wire
has
255Hz
a
when
C. Radio waves
D. Infrared-rays.
stretched by a force of 225 N. If
the force increases to 324 N, what
29. When a red rose flower is
is the new frequency of vibration?
observed
in
blue
light,
what
colour does the observer see?
A. 356 Hz
B. 306 Hz
A. Yellow
C. 512 Hz
B. Red
D. 488 Hz.
C. Blue
D. Magenta.
27. A certain far-sighted person
cannot see objects that are closer
30. The eclipse of the sun occurs
to the eye than 50cm clearly.
when the
Determine
the
power
of
the
converging lens which will enable
A. moon’s umbra falls on some
him to see at 25cm.
part of the earth
B. moon is between the sun and
A. 0.04 D
the earth
B. 0.06 D
C. earth is between the sun and
C. 0.02 D
the moon
D. 0.03 D.
D. moon is not completely hidden
in the earth’s shadow.
28.
Which
of
the
following
electromagnetic waves has the
31. A cannon is fired from town X.
highest frequency?
After how long is the sound heard
at a town Y 4.95 km away?
A. X-rays
[velocity of sound in air = 333
B. Ultra-violet rays
ms-1]
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A. 15 s
battery is connected across the
B. 0 s
combination. The current flowing
C. 10 s
through the 12 Ω resistor is
D. 12 s
32. An image in a convex lens is
upright magnified 3 times. If the
focal length of the lens is 15cm,
what is the object distance?
A. 9.6 A
B. 14.4 A
A. 14 cm
C. 1.0 A
B. 10cm
D. 3.2 A.
C. 25 cm
D. 26cm.
35. If the charge of electricity per
33. The capacitance of a parallel
plate capacitor is 20 μF in air and
60
μF
in
the
presence
of
a
dielectric. What is the dielectric
constant?
kWh is N4, what is the cost of
operating an electrical appliance
rated 2.50 V, 2 A for 6 hours?
A. ₦24
B. ₦0.12
C. ₦12
A. 2.0
D. ₦16.
B. 0.3
C. 6.0
36. The correct expression for the
D. 3.0.
potential at a point, distance r
34. In the circuit below, three
resistors, 2Ω, 4 Ω and 12 Ω are
connected in parallel and a 12 V
from a charge q, in an electric
field is
A.
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39. Two resistors 5 Ω and 10 Ω
B.
are arranged first in series and
C.
later in parallel to a 24 V source.
D.
The ratio of total power dissipated
in
the
series
and
parallel
arrangement respectively is
37. Three similar cells each of
e.m.f 2V and internal resistance 2
A. 3:5
Ω are connected in parallel, the
B. 5:3
total
C. 1:50
e.m.f
and
total
internal
resistance are respectively
D. 50:1.
A. 6 V, 0.7 Ω
40. Which of the following will be
B. 6 V, 6.0 Ω
applied
C. 2 V, 0.7 Ω
electrolysis?
when
a
metal
x
in
D. 2 V, 6.0 Ω
A. Y is the anode and very high
38.
In
appliances
homes,
and
electrical
lamps
are
connected in parallel because
current is used
B. X is the anode and very high
current is used
C. X is the cathode and Y is the
A. less voltage will be used
anode
B. parallel connection does not
D. Y is the cathode and X is the
heat up the wires
anode
C. series connection uses high
voltage
41. A radioactive isotope has a
D. less current will be used.
decay
constant
Calculate its half-life.
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of
10-5s-1.
A. 6.93 x 104s
current is total power dissipated
B. 6.93 x 10-6s
in the series
C. 6.93 x 10-5s
D. 6.93 x 105s
A.
B. √2
42. Which of the following is a
property of steel?
C. 2
D.
A. It can easily be magnetized
45. Two inductors of inductances
and demagnetized
B. It cannot retain its magnetism
4H and 8H are arranged in series
and a current of 10A is passed
longer than iron
C. It can be used for making
through them. What is the energy
stored in them?
temporary magnets
D. It can be used for making
A. 250 J
permanent magnets.
B. 500 J
43. If the threshold frequency for
tungsten is 1.3 x 1015Hz, what is
C. 50 J
D. 133 J.
its work function?
46. Under which of the following
conditions
A. 8.85 x 10-18 J
do
gasses
conduct
electricity?
B. 8.58 x 10-19 J
C. 8.58 x 10-15 J
A. High pressure and high p.d
D. 8.58 x 10-17 J
B. Low pressure and low p.d
[h = 6.6 x 10-34 Js]
C. low pressure and high p.d
44. In an a.c. circuit, the ratio of
r.m.s value to
D. High pressure and low p.d
peak value of
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47. In measuring high frequency
impurities. The process is referred
a.c., the instrument used is the
to as
A. hot wire ammeter
A. doping
B. d.c. ammeter
B. saturation
C. moving coil ammeter
C. bonding
D. moving iron ammeter.
D. amplification.
48. The bond between silicon and
ANSWER KEYS:
germanium is
1. C 2. A 3. B 4. A 5. D 6. A 7. A
A. electrovalent
8. C 9. A 10. A 11. C 12. D 13. D
B. covalent
14. A 15. A 16. C 17. D 18. B
C. ionic
19. B 20. D 21. C 22. D 23. NO
D. dative.
ANSWER 24. B 25. D
49.
Which
materials
of
has
the
an
following
increase
in
resistance with temperature?
26. C 27. C 28. B 29. A 30. C
31. B 32. C 33. A 34. D 35. NO
ANSWER 36. B 37. D 38. A 39.
NO ANSWER 40. A 41. A 42. A
A. Electrolyte
43. C 44. A 45. A 46. D 47. B
B. Water
48. C 49. D 50. B
C. Metals
D. Wood.
50. The electrical properties of
germination
drastically
can
by
the
be
altered
addition
of
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2012 JAMB PHYSICS QUESTIONS
PAPER TYPE: PURPLE
If the force in the rope is 1500N,
what is the frictional force on the
1. Which Question paper type of
physics
as
indicated
above
load?
is
given to you
A. 1524N
B. 1350N
A. Type Green
C. 1260N
B. Type Purple
D. 1061N
C. Type Red
D. Type Yellow
4.
2. In order to remove the error of
parallax
when
taking
measurements with a metre rule,
the eye should be focused
A. slantingly towards the left on
the markings
B. slantingly towards the right on
the markings
C. vertically downwards on the
From the diagram above, OT is,
markings
D.
vertically
upwards
on
the
A. 18N
B. 14N
markings.
C. 5N
3. A load is pulled at a uniform
D. 2N
speed along horizontal floor by a
rope at 45⁰ to floor.
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of 30ms-2 for 20s. Calculate the
5.
distance covered at the end of the
motion.
A. 6km
B. 12km
From
the
shown
velocity-time
above,
which
graph
of
the
C. 18km
D. 24km.
following quantities CANNOT be
8. A rocket is fired from the
determined?
earth’s surface to a distant planet.
By
A. Deceleration.
Newton’s
law
of
universal
gravitation, the force F will
B. Initial velocity.
C. Total distance travelled.
A. increase as a reduces
D. Initial acceleration
B. increase as G varies
6. Calculate the total distance
covered by a train before coming
C. remains constant
D. increases as r increases
to rest if its initial speed is 30ms-1
with a constant retardation of
9. If a freely suspended object is
pulled to one side and released, it
0.1ms-2.
oscillates
about
the
point
of
suspension because the
A. 5500m
B. 4500m
A.
C. 4200m
acceleration
is
directly
proportional to the displacement
D. 3000m.
B. motion is directed away from
7. A car starts from rest and
the equilibrium point
moves with a uniform acceleration
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C.
acceleration
is
directly
A. 1200J
proportional to the square of the
B. 2400J
displacement
C. 6000J
D. velocity is minimum at the
D. 7000J
equilibrium point.
12.
10. An object moves in a circular
path of radius 0.5m with a speed
of 1ms-1. What is its angular
velocity?
The
A. 8 rads-1
B. 4 rads
diagram
above
shows
a
wooden block just about to slide
-1
C. 2 rads-1
down an inclined plane whose
D. 1 rads-1
inclination to the horizontal is α.
The coefficient of frictional force
between the block and the plane
11.
is
A. sin oc
B. tan oc
C. cot oc
D. cos oc
13. An object of mass 20kg slides
From
the
diagram
above,
calculate the work done when the
particle moves from x = 0m to x
= 80m.
down an inclined plane at an
angle of 30° to the horizontal.
The coefficient of an active friction
is
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A. 0.2
16. An object of volume 1m3 and
B. 0.3
mass 2kg is totally immersed in a
C. 0.5
liquid of density 1kgm-3. Calculate
D. 0.6
its apparent weight.
[g ≈10ms-2]
A. 20 N
14. A block and tackle is used to
B. 10 N
raise a load of 25N through a
C. 2 N
vertical distance of 30m. What is
D. 1 N
the efficiency of the system if the
work
done
against
friction
is
17. The pressure at any point in a
1500J? [g ≈10ms-2]
liquid at rest depends only on the
A. 62.5%
A. depth and the density
B. 73.3%
B. mass and the volume
C. 83.3%
C. quantity and the surface area
D. 94.3%
D. surface area and the viscosity.
15. If a load of 1kg stretches a
18. A balloon whose volume is
cord by 1.2cm, what is the force
300m3 is filled with hydrogen. If
constant of the cord?
the density of air is 1.3kgm-3, find
[g ≈10ms-2]
the up thrust on the balloon. [g
≈10ms-2]
A. 866 Nm-1
B. 833 Nm-1
A. 3000N
C. 769 Nm-1
B. 3800N
D. 667 Nm-1
C. 3900N
D. 4200N
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19.
Clinical
thermometers
are
C. 1676.3cm3
examples of
D. 1456.5cm3
A. pressure gas thermometer
22.
B. resistance thermometer
change when 500 J of heat is
C. alcohol thermometer
supplied to 100g of water.
Calculate
the
temperature
D. mercury-in-glass thermometer.
A. 12.1°C
20. Two metals P and Q are
B. 2.1°C
heated
same
C. 1.2°C
the
D. 0.1°C
through
temperature
the
difference.
If
ratio of the linear expansivities of
(Specific heat capacity of water =
P to Q is 2:3 and the ratio of their
4200Jkg-1K-1)
lengths is 3:4 respectively, the
ratio of the increase in lengths of
23. Which of the following is NOT
P to Q is
a factor that can increase the rate
of evaporation of water in a lake?
A. 1:2
B. 2:1
A. Increase in the pressure of the
C. 8:9
atmosphere
D. 9:8
B. Rise in temperature
C. Increase in the average speed
21. 2000cm3 of a gas is collected
of the molecules of water
at 27°C and 700mmHg. What is
D. Increase in the kinetic energy
the volume of the gas at standard
of the molecules of water.
temperature and pressure?
24. The quantity of heat energy
A. 1896.5cm3
required to melt completely 1kg
B. 1767.3cm3
of ice at -30°C is
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A. 4.13 x 105J
26.
B. 4.13 x 105J
travelling in a horizontal direction
C. 3.56 x 104J
is expressed as
D. 3.56 x 102J
y=15 sin
(latent heat of fusion = 3.5 x 105
wavelength?
The
equation
of
a
wave
(60t-x) what is its
-1
Jkg , specific heat capacity of ice
= 2.1 x 103Jkg-1 K-1)
A. 60m
B. 15m
25. I. It is a rapid, constant
C. 5m
and irregular motion of tiny
D. 2m
particles.
II. It gives evidence that tiny
particles
of
matter
27.
called
molecules exist.
III. It
takes place only in
gases.
IV.
It
gives
evidence
that
molecules are in a constant
state of random motion.
From the diagram above, if the
particles F is at a distance x from
O to the right, the phase of the
vibration will be different from
Which of the combinations above
that at O by
is correct about Brownian motion?
A.
A. I, II and III
B.
B. II, III and IV only
C.
C. I, III and IV only
D. I, II and IV only
D.
28. Which of the following factors
will affect the velocity of sound?
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A. An increase in the pitch of the
31. A pinhole camera is placed
sound
300m in front of a building so that
B. An increase in the loudness of
the image is formed on a screen
the sound
5cm from the pinhole. If the
C. Wind travelling in the same
image is 2.5cm high, the height of
direction of the sound
the building will be
D. A change in the atmospheric
pressure at constant temperature.
A. 25m
B. 50m
29.
The
vibration
characteristics
that
of
determines
a
C. 100m
its
D. 150m
intensity is the
32. The magnification of an object
A. Frequency
2cm tall when placed 10cm in
B. Overtone
front of a plane mirror is
C. Wavelength
D. Amplitude
A. 6.0
B. 1.0
30. Where a man can place his
C. 0.7
face to get an enlarged image
D. 0.6
when using a concave mirror to
shave.
33.
After
reflection
from
the
concave mirror, rays of light from
A.
between
the
centre
of
the sun converges
curvature and the principle focus
B. at principle focus
A. At the radius of curvature
C. between the principle focus
B. At the focus
and the pole
C. Beyond the radius of curvature
D. At the centre of the curvature
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D. Between the focus and radius
C. II & III only
of curvature
D. II only
34. A glass block of thickness
36. The use of lenses is NOT
10cm is placed on an object. If an
applicable in the
observer
views
the
object
vertically, the displacement of the
A. projector
object is
B. human eye
C. periscope
A. 3.33cm
D. telescope
B. 5.00cm
C. 6.67cm
37. Dispersion of white light is the
D. 8.50cm
ability of white light to
35. I. Rays of light travel from
A. Penetrate air, water and glass
a less dense medium to a
B. Move in a straight line
denser medium
C. Move around corners
II. The angle of incidence is
D. Separate to its component
greater than critical angle.
colours
III. Rays of light travel from a
denser
medium
to
a
less
dense medium
38.
A
newly
charged
12V
accumulator can easily start a car
whereas eight new dry cells in
Which of the statements above
series with an effective e.m.f. of
are conditions for total internal
12V cannot start the same car
reflection to occur?
because
A. I & II only
A. The current capacity is high
B. I & III only
B. The current capacity is low
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C. It cannot be re-charged
field at 3.0 x 102ms-1 at right
D. It cannot easily be connected
angles to the field. If the force on
to a car
this particle is 1.8 x 10-8N, what is
the magnitude of the field?
39.
A. 6.0 x 10-1T
B. 6.0 x 10-2T
C. 6.0 x 10-3T
Six identical cells, each of e.m.f.
2V
are
connected
as
D. 6.0 x 10-4T
shown
above. The effective e.m.f. of the
cell is
42. Which of the following is the
correct shape of the graph of
capacity
A. 0V
reactance
Xc
versus
frequency F for a pure capacitor in
B. 4V
an a.c. circuit?
C. 6V
D. 12V
40. The fuse in an electric devise
is always connected to the ----
A. Neutral
side of an electric
supply
43. The current output form of an
B. Earth side of an electric supply
a.c. source is given as I = 10 sin
C. Live side of an electric supply
ωt. The d.c. equivalent of the
D. Terminal side of an electric
current is
supply
A. 5.0A
41. A particle carrying a charge of
B. 7.1A
-8
1.0 x 10 C enters a magnetic
C. 10.0A
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D. 14.1A
C. Wave particles
D. Beta particles
44. A conductor of length 1m
moves with a velocity of 50ms-1
47. A piece of radioactive material
at an angle of 30° to the direction
contains 1000 atoms. If its half-
of a uniform magnetic field of flux
life is 20 seconds, the time taken
density 1.5 Wbm-2. What is the
for 125 atoms to remain is
e.m.f. induced in the conductor?
A. 20 seconds
A. 37.5V
B. 40 seconds
B. 50.5V
C. 60 seconds
C. 75.0V
D. 80 seconds
D. 80.5V
48. The p-n junction diodes can
45. The process of detecting a pin
act as rectifiers because they
mistakenly swallowed by a child
x–ray
A. Conduct current when forward
biased
A. Diagnosis
B. Conduct current when reverse-
B. Therapy
biased
C. Crystallography
C. Block current when forward
D. mammography
biased
D.
46.
Which
of
the
following
Conduct
current
in
both
directions
particles CANNOT be deflected by
both electric and magnetic fields?
49. If a reverse-biased voltage is
applied across a p-n junction, the
A. Gamma rays
depletion layer width is
B. Alpha particles
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A. Increased
36. C 37. D 38. B 39. B 40. C
B. Decreased
41. C 42. D 43. B 44. A 45. C
C. Constant
46. A 47. C 48. B 49. B 50. D
D. halved
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50. I. Small size
II. Low power requirement
If you need an explanation to
III. Not easily damaged by
any of the answers or you want to
high Temperature
download more past questions
IV. Highly durable
for FREE.
Which
of
the
above
are
the
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advantages of semiconductors?
A. I, II and III only
B. II, III and IV only
C. I, II and IV only
D. I, II III and IV
ANSWER KEYS:
1. B 2. C 3. D 4. C 5. D 6. B 7. A
8. A 9. A 10. C 11. B 12. B 13. D
14. C 15. B 16. B 17. A 18. C
19. D 20. A 21. C 22. C 23. A
24. B 25. D
26. C 27. A 28. C 29. D 30. C
31. D 32. B 33. B 34. A 35. C
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study group
2013 JAMB PHYSICS QUESTIONS
PAPER TYPE: D
C. 43.3 N
D. 25.0N
1. Which Question Paper Type of
Physics is given to you?
4. The pair pf physical quantities
that are scalar only are
A. Type D.
B. Type I.
A. volume and area
C. Type B.
B. moment and momentum
D. Type U.
C. length and displacement.
D. impulse and time.
2. When a brick is taken from the
earth’s surface to the moon, its
5. A simple pendulum of length
mass
0.4m has a period of 2s. What is
the period a similar pendulum of
A. remains constant
length 0.8m at the same place?
B. reduces.
C. increases.
A. 8s
D. becomes zero.
B. 4s
C. 2√2
3. The resultant of two forces is
50N.
If
the
forces
D. √2
are
perpendicular to each other and
6. A train with an initial velocity of
one of them makes an angle of
20m
30° with the resultant, find its
deceleration of 2
magnitude.
required to bring the train to a
−1
is subjected to a uniform
complete halt is
A. 100.0N
B. 57.7N
A. 5s.
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−2
. The time
B. 10s.
must a similar body be situated to
C. 20s.
have a potential energy equal in
D. 40s.
value with kinetic energy of the
moving body?
7. Calculate the apparent weight
loss of a man weighing 70kg in an
A. 25.0m
elevator moving downwards with
B. 20.0m.
an acceleration of 1.5m
−2
.
C. 1.3m.
D. 1.0m.
A. 686N.
B. 595N.
10. If a pump is capable of lifting
C. 581N.
5000kg
D. 1105N
vertical height of 60 m in 15 min,
[ g ≈10m
−2
]
of
water
through
a
the power of the pump is
8. A piece of cork floats in a
A. 2.5 x 105J
−1
liquid. What fraction of its volume
B. 2.5 x 104J
−1
will be immersed in the liquid?
C. 3.3 x 103Js−1
D. 3.3 x 102J
−1
A. 0.8.
B. 0.5.
11.
C. 0.2.
between
D. 0.1.
surface is
The
[Density of the cork = 0.25 x
103
−3
, density of the liquid =
1.25 x 103kg
−3
]
A. infinity.
B. one
C. half.
9. An object is moving with a
velocity of 5m
−1
D. zero.
. At what height
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coefficient
two
of
friction
perfectly
smooth
−3
12. What effort will a machine of
[Density of sea water = 1013k
efficiency 90% apply to lift a load
one atmosphere = 0.01 x 105
of 180N if its effort arm is twice
N
−2
g=10m
−2
]
as long as its load arm?
15. What volume of alcohol will
A. 80N
have same mass as 4.2
B. 90N.
petrol?
−3
of
C. 100N.
A. 0.8
3
B. 1.4
3
.
13. Calculate the work done when
C. 3.6
3
.
a force of 20N stretches a spring
D. 4.9
3
D. 120N.
.
.
by 50mm.
16. Calculate the length which
A. 0.5J.
corresponds to a temperature of
B. 1.5J.
20°C if the used steam points of
C. 2.0J.
an ungraduated thermometer are
D. 2.5J.
400 mm apart.
14. At what depth below the sea-
A. 20mm.
level
B. 30mm.
would
one
experience
a
change of pressure equal to one
C. 60mm
atmosphere?
D. 80mm.
A. 0.1 m.
17. A wire of length 100.0m at
B. 1.0m.
30°C has linear expansivity of 2 x
C. 10.0m.
10−5
D. 100.0m
the wire at a temperature of -
−1
. Calculate the length of
10°C.
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A. 100.08m.
20. Foods cook quicker in salt
B. 100.04m.
water than in pure water because
C. 99.96m
of the effect of
D. 99.92m.
A. dissolved substances on the
18.
A
−2
105
1.2
gas
3
at
a
pressure
expands from 0.6
−3
of
boiling point.
to
B. atmospheric pressure on the
at constant temperature,
boiling point.
C. food nutrients on the thermal
the work done is
energy.
A. 7.0 x 106 .
D.
B. 6.0 x 106 .
conductivity of water.
salts
on
the
thermal
C. 6.0 x 105J.
D. 6.0 x 104 .
21. Steam from boiling water
causes more damage on the skin
19. Two liquids X and Y having
that does boiling water because
the same mass are supplied with
the same quantity of heat. If the
A. water has a high specific heat.
temperature rise in X is twice that
B.
of Y, the ratio of specific heat
fusion.
capacity of V to that of Y is
C.
steam
the
has
steam
latent
is
at
heat
of
higher
temperature than the water.
A. 2:1.
D. steam brings heat more easily
B. 1:2.
by convection.
C. 4:1.
D. 1:4.
22.
What
will
happen
to
the
boiling point of pure water when it
is heated in a place 30m below
sea level?
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A. It will be more than 100°C.
C. mechanical wave.
B. It will be less than 100°C.
D. seismic wave.
C. It will still be at 100°C.
D. It will be fluctuating.
26. A transverse wave and a
longitudinal wave travelling in the
23. The rise or fall of liquid in a
same direction in a medium differ
narrow tube is because of the
essentially in their
A. viscosity of the liquid.
A. frequency.
B. surface tension of the liquid.
B. amplitude.
C. friction between the walls of
C. direction of vibration of the
the tube and the liquid.
particles of the medium
D. osmotic pressure of the liquid.
D.
period
of
vibration
of
the
particles of the medium.
24.
The
mechanism
of
heat
transfer from one point to another
27. What is the velocity of sound
through
at 100°C, if the velocity of sound
the
vibration
of
the
molecules of the medium is
at 0°C is 340m
A. convection.
A. 497m
B. conduction
B. 440m
C. radiation
C. 397m
D. diffusion
D. 240m
25.
A
wave
travels
through
stretched strings is known as
28.
−1
?
−1
−1
−1
−1
If
a
sonometer
has
a
fundamental frequency of 450Hz,
what is the frequency of the fifth
A. electromagnetic wave.
overtone?
B. micro wave.
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A.2700Hz
B. 456Hz
C.44Hz
D.75Hz
29. A man 1.5m tall is standing
3m in front of a pinhole camera
A. 41°.
whose distance between the hole
B. 49°.
and the screen is 0.1m. What is
C. 55°.
the height of the image of the
D. 61°.
man on the screen?
32. Total internal reflection will
not occur when light travels from
A. 0.05m
B. 0.15m.
A. water to air.
C. 0.30m.
B. water into glass.
D. 1.00m.
C. glass to air.
30. A ray of light passing through
the
centre
of
curvature
of
D. glass into water.
a
concave mirror is reflected by the
33.
mirror at
A. 0°.
B. 45°.
C. 90°.
What does the diagram above
D. 180°
31.
From
represent?
the
diagram
below,
calculate the incident angle i.
A. telescope in normal use.
B. microscope in normal use.
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C. telescope in abnormal use.
A. 1.5 x 10−11N
D. microscope in abnormal use.
B. 1.5 x 10−12N
C. 1.5 x 10−13N
34. If the linear magnification of
D. 1.5 x 10−14N
the objective and eyepiece convex
lenses of a compound microscope
37. Capacitors are used in the
are 4 and 7 respectively, calculate
induction coil to
the angular magnification of the
microscope.
A. control circuits.
B. dissipate energy.
A. 2.
C. prevent electric sparks.
B. 3.
D. prevent distortion of electric
C. 11.
fields.
D. 28.
38.
A
cell
of
emf
1.5V
is
connected in series with a 1Ω
35. The angle of deviation of light
resistor and a current of 0.3A
of various colours passing through
flows through the resistor. Find
a triangular prism increases in the
the internal resistance of the cell.
order
A. 4Ω.
A. red → green → blue.
B. 3.0Ω.
B. green → violet → blue.
C. 1.5Ω.
C. blue → red → green.
D. 1.00Ω.
D. blue → green → red.
39. Which of the following obeys
36. Calculate the force acting on
ohms law?
an electron of charge 1.5 x 10−19C
placed
in
an
intensity 105V
electric
−1
.
field
of
A. electrolytes.
B. metals.
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C. diode.
B. gains potential
D. glass.
kinetic energy.
C.
loses
potential
energy and
energy
and
40. A house has ten 40W and five
gains kinetic energy.
100W bulbs. How much will it cost
D. loses both potential and kinetic
the owner of the house to keep
energy.
them lit for 10 hours if the cost of
a unit is ₦5?
43. To convert a galvanometer to
voltmeter, a __
A. ₦90.
B. ₦50.
A. high resistance is connected to
C. ₦45
it in series.
D. ₦40.
B. high resistance is connected to
41. An electric device is rated
it in parallel.
2000V,
C. low resistance is connected to
250V.
Calculate
the
maximum current it can take.
it in series.
D. low resistance is connected to
A. 9A.
it in parallel.
B. 8A.
C. 7A.
44.
D. 6A.
explained using
42.
When
a
charge
moves
Induced
emfs
are
best
A. Ohm’s law.
through an electric circuit in the
B. Faraday’s law.
direction of an electric force, it
C. Coulomb’s law.
___
D. Lenz’s law.
A. gains both potential and kinetic
45. If a current of 2.5A flows
energy.
through an electrolyte for 3 hours
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and
1.8g
of
a
substance
is
deposited, what is the mass of the
48. The particle nature of light is
demonstrated by the
substance that will be deposited if
a current of 4A flows through it
A. photoelectric effect.
for 4.8 hours?
B. speed of light.
C. colours of light.
A. 2.4g
D. diffraction of light.
B. 3.2g
C. 4.6g.
49.
D. 4.8g.
having a wavelength of 10−10m is
46. Calculate the energy of the
A. 2.0 x 10−15
third level of an atom if the
B. 1.7 x 10−13
ground state energy is -24eV
C. 2.0 x 10−12
The
energy
of
a
photon
D. 1.7 x 10−12
A. -9.20eV.
(h= 6.63 x 10−34
B. -8.20eV.
108
−1
c= 3.0 x
)
C. -2.75eV.
D. -1.75eV.
50. The bond between silicon and
germanium is ___
47.
In
photo-emission,
the
number of photoelectrons ejected
A. dative.
per second depends on the ___.
B. covalent.
C. trivalent.
A. frequency of the beam.
D. ionic.
B. work function of the metal.
C.
threshold frequency of
the
metal.
D. intensity of the beam.
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ANSWER KEYS:
1. A 2. A 3. C 4. A 5. C 6. B 7. D
8. C 9. C 10. C 11. D 12. C 13. A
14. C 15. C 16. D 17. D 18. D
19. C 20. A 21. C 22. A 23. B
24. B 25. C
26. C 27. B 28. A 29. A 30. A
31. A 32. B 33. A 34. D 35. D
36. C 37. C 38. A 39. B 40. C
41. B 42. A 43. A 44. D 45. C
46. C 47. C 48. D 49. A 50. C
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2014 JAMB PHYSICS QUESTIONS
PAPER TYPE: F
4. I. Electrical potential
II. Torque
1. Which question paper type of
III. Kinetic Energy
physics is given to you
IV. Momentum.
A. Type F
Which of the quantities listed are
B. Type E
vectors?
C. Type L
D. Type S
A. II and IV
B. I and II
2. What is the least possible error
C. I and III
encountered
D. II and III
when
taking
measurement with a meter rule?
5. Which type of motion do the
A. 0.1mm
wheels of a moving car undergo?
B. 1.0mm
C. 0.5mm
A.
D. 0.2mm
motion
B.
3.
A
quantity
which
requires
Vibratory
Random
translational
and
translational
motion
magnitude and direction to be
C.
specified is
motion
D.
A. Temperature
and
Rotational
Translational
and
and
oscillatory
rotational
motion
B. Distance
C. Displacement
6. From the diagram below, the
D. Mass
region of zero acceleration is
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B. 4.2kms-1
C. 4.0kms-1
D. 11.3kms-1
9. An object of weight 80kg on
earth is taken to a planet where
acceleration due to gravity is onethird of its value on earth. The
A. MN
weight of the object on the planet
B. NS
is
C. SP
A. 48N
D. PQ
B. 12N
7. A car accelerates uniformly
C. 27N
from rest at 3ms-2. its velocity
D. 36N
after traveling a distance of 24m
10.
is
One
of
the
conditions
necessary for an object to be in
A. 12ms-1
equilibrium when acted upon by a
B. 144ms-1
number of parallel forces is that
C. 72ms-1
the vector sum of the forces is
D. 36ms-1
A. Average
8. Calculate the escape velocity of
B. Zero
a
C. Negative
satellite
launched
from
the
earth's surface if the radius of the
D. Positive
earth is 6.4 x 106m
A. 25.3kms-1
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11. What happens when three
B. Mechanical energy
coplanar non-parallel forces are in
C. Electrical energy
equilibrium?
D. Potential energy
A.
Their
lines
of
action
are
parallel.
B.
75% is used to lift a load of
They
are
represented
in
magnitude only
C.
14. A machine whose efficiency is
They
are
1000N. Calculate the effort put in
to the machine if it has a Velocity
represented
in
ratio of 4.
direction only
D. Their lines of action meet at a
A. 343.32N
point
B. 233.33N
C. 333.33N
12. An object of mass 20kg is
D. 334.33N
released from a height of 10m
above
the
ground
level.
The
15. A wheel and an axle is used to
kinetic energy of the object just
raise a load whose weight is 800N
before it hits the ground is
when an effort of 250N is applied.
If the radii of the wheel and axle
A. 200J
are
B. 4000J
respectively, the efficiency of the
C. 2000J
machine is
800mm
D. 500J
A. 90%
13. The energy in the nucleus of
B. 80%
atoms produce heat which can be
C. 85%
used to generate
D. 87%
A. Kinetic energy
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and
200mm
16. A force of 500N is applied to a
B. mist
steel wire of cross-sectional area
C. dew
0.2m2, the tensile stress is
D. fog
A. 2.5x104Nm-2
19. What is the equivalent of 20K
B. 1.0x102Nm-2
in Celsius scale?
C. 1.0x103Nm-2
D. 2.5x103Nm-2
A. 293 °C
B. 68 °C
17.
C. 36⁰C
D. 20°C
20. A glass bottle of initial volume
2 x 104cm3 is heated from 20°C to
50°C. If the linear expansively of
From
the
diagram
above,
the
point that represent the elastic
limit is
B. 20 005.4cm3
C. 20 008.1cm3
B. R
D. 20 013.5cm3
C. S
D. T
21.
18. The small droplet of water
that forms on the grass in early
A. haul
the bottle at 50°C is
A. 20 016.2cm3
A. Q
hours of the morning is
glass is 9x10-6K-1, the volume of
The
equation
PaVbTc=
constant reduces to Charles Law if
A. a=1, b=1and c=0
B. a=1, b=0 and c=-1
C. a=0, b=1 and c=1
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D. a=0, b=1 and c=-1
25. Heat transfer by convection in
a liquid is due to the
22. The quantity of heat needed
to raise the temperature of a
A. Latent heat of vaporization of
body by 1K is the body's
the liquid
B.
Increased
vibration
of
the
A. Heat capacity
molecules of the liquid about their
B. Internal energy
mean position
C. Specific heat capacity
C. Variation of density of the
D. Latent heat of fusion
liquid
D. Expansion of the liquid as it is
23.
The
melting
point
of
a
heated
substance is equivalent to its
26. The distance between two
A. Vapor Pressure
successive crests of a wave is
B. solidification Temperature
15cm and the velocity 300ms-1.
C. Liquidification Temperature
Calculate the frequency.
D. Solidification Pressures
A. 2.0x102Hz
24. The temperature at which the
B. 4.5x103Hz
water vapor present in the air is
C. 2.0x103Hz
just sufficient to saturate air is
D. 4.5x102Hz
A. Boiling point
27. A boy receives the echo of his
B. Ice point
clap reflected by a nearby hill
C. Saturation point
0.8s later. How far is he from the
D. Dew point
hill?
A. 528m
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B. 66m
C. 2.5 x 101
C. 136m
D. 2.5 x 102
D. 264m
30. The focal length of a concave
28.
mirror is 2.0cm. If an object is
placed 8.0cm from it, the image is
at
A. 2.7m
B. 2.0m
C. 2.3m
D. 2.5m
31. In a compound microscope,
The
diagram
above
show
a
stationery wave of wavelength 40
the objective and the eye piece
focal lengths are
cm in a closed tube. The length l
is the resonating air column is
A. Long
B. Short
A. 10cm
C. The same
B. 20cm
D. At infinity
C. 30cm
D. 40cm
32. When a telescope is in normal
use, the final image is at
29. An object is placed 10m from
a pinhole camera of length 25cm.
A. The focus
Calculate the linear magnification.
B. The radius of curvature
C. The near point
A. 2.5 x 10
-2
B. 2.5 x 10
-1
D. Infinity
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33. When a negatively charged
C. 3uf
rod is brought near the cap of a
D. 4uf
charged
gold
leaf
electroscope
which has positive charges, the
36. The maximum power transfer
leaf
occurs in a cell when the external
resistance is
A. Collapses
B. Collapses and diverges again
A. Twice the internal resistance of
C. Diverges
the cell
D. Remains the same
B.
The
same
as
the
internal
the
internal
resistance of the cell
34. What charge is stored in a
C.
0.1F capacitor when a 10V supply
resistance of the cell
is connected across it?
D.
Greater
Less
than
than
the
internal
resistance of the cell
A. 1C
B. 5C
37. If a metal wire 4m long and
C. 4C
crosssectional area 0.8 mm2 has
D. 2C
a resistance of 60Ω, find the
resistivity of the wire
35.
A. 5.3x10-7 Ωm
B. 3.0x10-5 Ωm
C. 1.2x10-6 Ωm
D. 3.2x10-6 Ωm
Calculate
the
effective
capacitance of the circuit above
38. A circuit has a resistance of
200Ω. The resistance of the circuit
A. 1uf
can be reduced to 120Ω when
B. 2uf
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A. A 300Ω resistor is connected to
A. 360°
it in parallel
B. 0°
B. An 80Ω resistor is connected to
C. 90°
it in series
D. 180°
C. A 150Ω resistor is connected to
it in parallel
Use
D. A 240Ω resistor is connected to
answer question 42 and 43
the
diagram
below
to
it in series
39. PHCN measures its electrical
energy in
42. The diagram above is that of
A. W
B. KWh
A. a step- up transformer
C. Wh
B. a step - down transformer
D. J
C. an auto transformer
D. an oil transformer.
40. What is the best method of
demagnetizing
a
steel
bar
magnet?
secondary winding is
A. Hammering
A. increasing
B. Heating it
B. reducing
C. Rough handling it
C. Stabilizing
D. Solenoid method
D. Varying
41. The magnitude of the angle of
dip at the equator is
43. the electromotive force in the
44.
What
type
of
reaction
represented by the equation
2
1
→
3
2
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+
1
0
+ energy?
2
1
is
+
A. Ionization
B. Argon
B. Fusion
C. Air
C. Fission
D. Neon
D. Chain
48.
45. When an atom undergoes a
206
When
80Pb,
210
82Pb
decays
to
it emits
beta decay, the atomic number of
the nucleus
A.
two
alpha
and
two
beta
one
beta
particles
A. Remains unchanged
B. an alpha particle
B. Decreases by one
C. one beta particle
C. Increases by one
D.
D. Becomes zero
particle
46. Calculate the mass of the
49.
copper
configuration, the output voltage
deposited
during
electrolysis when a current of 4A
one
alpha
In
a
and
common
emitter
is through the
passes through a copper salt for 2
hours.
A. Resistor
[ece of Copper z=3.3x10-7kgC-1]
B. Base
C. Collector
A. 2.9 x 105kg
D. Emitter
B. 9.5 x 10-7kg
C. 9.5 x 10-3kg
50. Which of the graph below
D. 2.9 x 10-4kg
shows the characteristic of an i-v
transistor?
47. Which gas produces a pink
coloured light in a discharge tube?
A. Mercury
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2015 JAMB PHYSICS QUESTIONS
1. A piece of rubber 10cm long
stretches 6mm when a load of
100N is hung from it. What is the
strain?
A. 6 X 10-3
B. 6
C. 60
D. 6.0 X 10-3
A. 5 ohms
B. 25 ohms
2.
C. 15 ohms
D. 35 ohms
4.
The diagram above shows the
lens arrangement in
A. compound microscope
B. a binocular
A body of mass 6kg rests on an
C. an astronomical
D. a periscope
3. What is the total resistance in
the below diagram?
inclined
plane.
reaction
R
and
The
normal
the
limiting
frictional force is F as shown in
the diagram (Fig. 2). If F is 30N
and g=10ms-2, then the angle of
inclination Ө is
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A. 15°
8. A good calorimeter should be
B. 60°
of
C. 45°
D. 30°
A. low specific heat capacity and
low heat conductivity
5. The speed of light in air is 3.0 x
B. high specific heat capacity and
103ms-1. Its speed in glass having
low heat conductivity
a refractive index of 1.65 is
C. high specific heat capacity and
low heat conductivity
A. 1.82 x 108 ms-1
D. low specific heat capacity and
B. 3.00 x 108 ms-1
high heat conductivity.
C. 4.95 x 108 ms-1
D. 1.65 x 108 ms-1
9. Which of the following is most
strongly deflected by a magnetic
6.
Longitudinal
waves
do
not
field?
exhibit
A. β-particles
A. refraction
B. χ-particles
B. polarization
C. γ-rays.
C. diffraction
D. χ-rays
D. reflection
10. If a beaker is filled with
7. A device that converts sound
water, it is observed that the
energy into electrical energy is
surface
of
horizontal
A. the horn of a motor car
the
at
water
the
is
not
glass-water
interface. This behaviour is due to
B. the telephone earpiece
C. a loudspeaker
A. friction
D. a microphone.
B. surface tension
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C. viscosity
A. gamma ray
D. evaporation
B. a proton
C. a neutron
11. A dynamo primarily conducts
D. an electron
A. potential energy into kinetic
13. In which of the following
energy
diagrams is the length of the
B. electrical energy into kinetic
length
energy
wavelength?
C.
mechanical
energy
tube
equal
to
one
into
electrical energy
D. kinetic energy into potential
energy
14. A calibrated potentiometer is
12.
used to measure the e.m.f. of a
cell because the
A. internal resistance of a cell is
small compared with that of the
potentiometer
B. potentiometer takes no current
from the cell
C.
A
particle
is
injected
perpendicularly into an electric
field. It travels along a curved
potentiometer
has
a linear
scale
D. resistance of the potentiometer
is less than that of a voltmeter
path as depicted in the figure 3.
The particle is
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15. Which of the following is a
in the measurement of the depth
vector?
of the sea?
A. Electric charge
A. Diffraction
B. Electric potential difference
B. Reflection
C. Electric field
C. Refraction
D. Electrical capacitance.
D. Interference
16. The photocell works on the
19. Which of the following are
principle of the
produced after a nuclear fusion
process?
A. voltaic cell
B. photographic plate
I. One heavy nucleus
C. emission of protons by incident
II. Neutrons
electrons
III. Protons
D.
emission
of
electrons
by
IV. Energy
incident radiation
A. I and II
17. When an atom loses or gains
B. II and III
a charge, it becomes
C. I and IV
D. II and IV.
A. an ion
B. an electron
20. Two similar kettles containing
C. a neutron
equal masses of boiling water are
D. a proton
placed on a table. If the surface of
one is highly polished and the
following
surface of the other is covered
characteristics of a wave is used
with soot, which of the following
18.
Which
of
the
observations is correct?
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A. The two kettles will cool down
C. Red and indigo
at the same rate
D. Yellow and violet.
B. The polished kettle cools down
more quickly by conduction
23. Which of the following with
C. The kettle covered with soot
respect
cools down more quickly because
simple harmonic motion are in
it is a good radiator of heat
phase?
to
a
body
performing
D. The kettle covered with soot
cools down more quickly by the
A. Displacement and velocity of
process of heat convection.
the body
B. Displacement and force on the
21. Total eclipse of the sun occurs
body
when the
C. Velocity and acceleration of the
body
A. moon is between the sun and
D. Force acting on the body and
the earth
the acceleration
B. sun is between the moon and
the earth
24. A uniform metre rule weighing
C. the earth is between the moon
0.5.V is to be pivoted on a knife-
and the sun
edge at the 30cm-mark. Where
D. ozone layer is threatened.
will a force of 2N be placed from
the pivot to balance the metre
22. Which of the following pairs of
colours
gives
the
rule?
widest
separation in the spectrum of
A. 95cm
white light?
B. 5cm
C. 20cm
A. Green and Yellow
D. 25cm
B. Red and violet
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25. A solid weighs 10.0N in air,
A. Air, alcohol and mercury
6.0N
B. alcohol, mercury and alcohol
when
water
and
fully
7.0N
immersed
when
in
fully
C. mercury, alcohol and mercury
immersed in a certain liquid X.
D. Air, mercury and alcohol
Calculate the relative density of
27.
the liquid.
production in the sun is
A. 3/4
A. nuclear fission
B. 4/3
B. nuclear fusion
C. 5/3
C. electron collision
D. 7/10
D. radioactivity decay
the
process
of
energy
28. the particle is responsible for
nuclear fusion in a nuclear reactor
is
A. electron
B. Photon
C. proton.
D. Neutron
The
diagram
maximum
above
and
shows
a
minimum
thermometer divided into three
portions P, Q and r. which of the
following
is
true
about
the
29.
if
the
uncertainty
in
the
measurement of the position of a
particle
is
5×10-10m,
the
uncertainty in the momentum of
the particle is
respective content of p, q and R?
A. 1.32 × 10-24 Ns
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B. 3.30 × 10-44 Ns
B. thermionic emission
C. 1.32 × 10-44 Ns
C. photon emission
D. 3.30 × 10-24 Ns
D. electron emission
[h=6.6 ×10-34J]
33.
The
production
of
pure
30. The change in volume when
spectrum could easily be achieved
450kg of ice is completely melted
using a
is
A. Triangular prism only
A. 0.50m
B.
B. 0.45m3
concave lens
C. 4.50m3
C. Glass prism with a pin
D. 0.05m3
D.
[density of ice =900kgm-3 Density
convex lens.
Triangular
Triangular
prism
prism
with
with
two
two
of water=1000 kgm-3]
34. A short chain is something
31. When impurities are added to
attached to the back of a petrol
semiconductor
tanker to
A. decreases
A. Conduct excess charges to the
B. increases then decreases
earth
C. decreases
B. Ensure the balancing of the
D. remains constant
tanker
C. Caution the driver when over
32. The process through which
speeding
free
D. Generate more friction
electrons
leave
the
hot
surface of hot metal is known as
35. A perfect emitter or absorber
A. photo emission
of radiant energy is a
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A. White body
38. The distance between two
B. Red body
successive crest of a wave is 15
C. Conductor
cm and the velocity is 300ms-1.
D. Black body
Calculate the frequency.
36.
A. 4.5 × 105 Hz
A. 4.5 × 102 Hz
B. 2.0 × 103 Hz
C. 2.0 × 102 Hz
Six identical cells, each of e.m.f
2V
are
connected
as
shown
39.
An
electric
lamp
marked
above. The effective e.m.f of the
240V, 60 Watts is left to operate
cell is
for an hour. How much energy is
generated by the filament?
A. 4V
B. 0V
A. 3.86 × 105 J
C. 6V
B. 2.16 × 105 J
D. 12V
C. 1.80 × 104 J
D. 3.56 × 105 J
37. If a pump is capable of lifting
5000Kg
of
water
through
a
40. In comparing the camera and
vertical height of 60 m in 50
human
mins, the power of the pump is
camera functions as the
A. 2.5×105Js-1
A. Iris
B. 3.3 × 103Js-1
B. Pupil
C. 2.5 ×104Js-1
C. Retina
D. 3.3 × 102Js-1
D. Cornea
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eye,
the
film
of
the
ANSWER KEYS:
1. A 2. C 3. B 4. D 5. A 6. B 7. C
8. D 9. A 10. B 11. C 12. D 13. A
14. B 15. C 16. D 17. A 18. B
19. C 20. D
21. A 22. B 23. C 24. D 25. A
26. B 27. C 28. D 29. A 30. D
31. A 32. B 33. D 34. A 35. D
36. A 37. B 38. A 39. B 40. C
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2016 JAMB PHYSICS QUESTIONS
B. 2.5 x 104J
−1
. 2.5 x 105J
−1
measurement with a meter rule?
D. 3.3 x 102J
−1
A. 0.5 mm
4.
B. 1.0 mm.
change when 500J of heat is
C. 0.2 mm.
supplied to 100g of water.
1. What is the least possible error
encountered
when
taking
Calculate
the
temperature
D. 0.1 mm
A. 12.1°C
2.
B. 2.1°C
C. 1.2°C
D. 0.1°C
5. Which of the following particles
The electromotive force in the
electric and magnetic fields?
secondary winding is
A. Gamma rays
A. stabilizing
B. Alpha particles.
B. reducing
C. Wave particles
C. increasing
D. Beta particles.
D. varying
3. If a pump is capable of lifting
5000
kg
CANNOT be deflected by both
of
water
through
a
vertical height of 60 in 15 mins,
6. Under which of the following
conditions
do
gasses
conduct
electricity?
the power of the pump is
A. High pressure and low p.d
A. 3.3 x 103J
−1
B. Low pressure and high p.d
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C. Low pressure and low p.d
9. An object of mass 80kg is
D. High pressure and high p.d
pulled
on
a
horizontal
rough
ground by a force of 500N. Find
7. Dispersion occurs when white
the coefficient of static friction.
light passes through a glass prism
because of the
A. 0.6.
B. 0.4
A. defects in the glass.
C. 1.0
B. high density of the glass.
D. 0.8.
C. different speeds of the colour
[ g ≈ 10m
−2
]
in the glass.
D. different hidden colours in the
10.
glass.
8.
The diagram above shows plank
RS pivoted at its centre of gravity
O and is in equilibrium with the
weighs P and Q. If a weight 2P is
added to P, the plank will be in
equilibrium again by
Calculate the e.m.f of the cell in
A. moving P nearer to O.
the above circuit if its internal
B. moving Q nearer to O.
resistance is negligible.
C. adding a weight Q to Q.
D. moving P further away from O.
A. 12V
B. 36V
11. A glass plate 0.9 cm thick has
C. 2V
a refractive index of 1.50. How
D. 8V
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235
long does it take for a pulse of
14.
light to pass through the plate?
+2X
92
+
1
0n
→
144
56
+
90
36
In the reaction above, X is
A. 3.0 x 10−10 s
B. 4.5 x 10−11 s
A. electron.
C. 3.0 x 10−11 s
B. neutron.
D. 4.5 x 10−10 s
C. neutrino.
[c= 3.0 x 108m
−1
]
D. proton.
12. The main purpose of the
15. To protect a material from the
transformer in an a.c radio set is
influence of an external magnetic
to
field, the material should be kept
in a
A. increase power to the radio.
B. convert energy from a.c. to d.c
A. soft iron ring.
C. step up the voltage.
B. loop of copper wire.
D. step down he voltage.
C. triangular zinc ring.
D. square steel ring.
13. The energy associated with
the
emitted
photon
when
a
16.
mercury atom changes from one
state
to
another
is
3.3
.
Calculate the frequency of the
photon.
A. 3.2 x 10−53 Hz.
B. 3.1 x 10−53 Hz
The
C. 1.3 x 10−53 Hz
medium M in the diagram above
D. 8.0 x 10−53 Hz
is
refractive
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index
of
the
A.
D.
They
B. √3
identical
are
formed
waves
by
travelling
two
in
opposite directions.
C.
D.
19.
The
height
at
which
the
atmosphere ceases to exist is
17. Thermal equilibrium between
two objects exists when
about 80km. if the atmospheric
pressure at a height of 20km
above the ground level is
A. the heat capacities of both
objects are the same
A. 480mmhg
B. the quantity of heat in both
objects are the same.
C.
the
B. 570mmhg
C.190mmhg
temperature
of
both
loses
heat
D. 380mmhg
objects are equal
D.
one
object
continuously to the other.
20. A metal of mass 0.5kg is
heated
to
transferred
18. Which of the following is a
characteristic
of
stationary
waves?
100⁰
to
well–lagged
containing water of heat capacity
of the metal
A. 92 j kg-1
minimum displacement.
B. 286 j kg-1 k-1
The
then
calorimeter of heat capacity 80jk-1
A. The antinode is a point of
B.
a
and
distance
successive
between
nodes
is
two
C. 133 j kg-1 k-1
one
D. 887 j kg-1 k-1
wavelength.
C. They can be transverse or
longitudinal
21. In the series a.c circuit shown
below, the p.d across the inductor
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is 8 V.r.m.s. The effective voltage
B. latent heat is absorbed, the
is
mass remains constant and the
volume decreases.
C. latent heat is given out, the
mass increases and the volume
remains constant
D. latent heat is given out, the
A. 10v
mass remains constant and the
B. 2v
volume decreases.
C. 14v
D. 48v
24.
22.
In
producing
a
closed
a
organ
musical
note,
pipe
an
antinode will always be produced
at
A. the closed end
In the diagram above, PQ and R
B. the middle
are
C. the open end
following options gives the correct
D. all the parts of the pipe.
relationship between the vectors?
23. What happens when a certain
A. P =Q +R
quantity of pure ice is completely
B. P= Q – R
changed to water at 0⁰C ?
C. P= R – Q
vectors.
Which
of
the
D. P+ Q +R = O
A. Latent heat is absorbed, the
mass decreases and the volume
25. If
two
parallel
conductors
increases.
carry currents flowing in the same
direction, the conductors will
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A. repel each other
C. temperature
B. attract each other
D. nature of the electrolyte.
C.
both
move
in
the
same
direction.
28. When the bottom tip of a
D. have no effect on each other
vibrating tuning fork is held in
contact with a wooden box, a
26.
Which
of
the
following
correctly explain(s) why a green
louder
sound
is
heard.
this
phenomenon is known as
leaf appears green in a bright
daylight?
A. beats
B. echoing
I. It absorbs only the green
C. reverberation
component of sunlight
D. resonance.
II. It absorbs all colours in
sunlight except green
29. a particle of mass m which ia
III. It reflects only the green
at rest splits up into two. if the
component of sunlight
mass and the velocity of one of
the
particles
are
m
and
v
A. I only
respectively, calculate the velocity
B. II and III only
of the seconds particle
C. I and II only
D. II only.
A.
B.
27. Which of the following factors
has no effect on the e.m.f of a
C.
primary cell?
D.
A. nature of plate
30.
B. size of the cell
equivalent of silver is 0.0012g/C if
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The
electrochemical
36.0g of silver is to be deposited
33.
by electrolysis on a surface by
barometric fluid because it
Mercury
is
suitable
as
a
passing a steady current for 5.0
minutes, the current must be
A. expands uniformly
B. is several times denser than
A. 6000A
water
B. 100A
C. is opaque
C. 100A
D. is a good conductor of heat
D. 1.0A
34.
Which
of
the
following
31. The principle of operation of
features is NOT a characteristic of
an induction coil is based on ___
natural radioactivity?
A. Ohm’s
A.
B. ampere’s law
phenomenon
C. faraday’s law
B. radioactivity is exhibited only
D. coulomb’s law
by the element of mass number
radioactivity
is
a
nuclear
greater than 206
32. A radioactive sample initially
C. The radioactivity of an element
contains N atoms. After three half
is
– lives the number of atoms that
magnetic
have disintegrated is
surroundings.
D
A.
B.
.
D.
affected
by
electric
fields
Radioactive
in
substances
and
the
emit
three types of radiations ∝-rays,
β-rays and γ-rays.
35. Which of the following is a
correct
explanation
INERTIA of a body?
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of
the
A. Reluctance to start moving at
image
rest and its reluctance to stop
mirror?
formed
by
a
concave
moving once it has begun move
B. Reluctance to stop moving
I. It can be observed on a
C. Readiness to start moving
screen
D. Reluctance to start moving and
II. It is always inverted and in
its readiness to stop moving once
front of the mirror
it has begun to move
III. It only seems to exist
IV. It is formed by the actual
36. If the force on a charge of 0.2
coulomb
in
an
electric
converging of rays of light.
field
intensity of the field is
A. I, II and III only
B. I, II and IV only
A. 0.8
C. I and III only)
B. 20.0 N/C
D. I and II only.
C. 0.8N/C
D. 4.2N/C
39. which of the following does
not cause a reduction
37. The point beyond which a
of
the
surface tension of water?
stretched spring does not return
to its original length is called the
A. soap solution
B. detergent
A. breaking point
C. alcohol
B. sprint constant
D. grease
C. elastic limit
D. elasticity point.
40. in what range of temperature
is
38.
Which
of
the
following
the
expansion
anomalous?
statements is applicable to a real
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of
water
A. +208⁰c to +212⁰c
B. -800⁰c +-76⁰c
C. 0⁰c to 4⁰c
D. -4⁰c TO 0⁰
ANSWER KEYS
1. B 2. C 3. A 4. C 5. A 6. B 7. C
8. D 9. A 10. B 11. C 12. D 13.
D 14. B 15. A 16. B 17. C 18. D
19. A 20. C
21. A 22. C 23. B 24. D 25. A
26. B 27. C 28. D 29. B 30. C
31. A 32. D 33. B 34. C 35. A
36. B 37. C 38. A 39. D 40. C
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2017 JAMB PHYSICS QUESTIONS
1. The focal length of a concave
D. 43.3N
mirror is 2.0 cm. If an object is
placed 8.0cm from it, the image is
4. A piece of radioactive material
at.
contains 1000 atoms. If its halflife is 20 seconds, the time taken
A. 2.7m
for 125 atoms to remain is
B. 2.3m
C.2.5m
A. 20 seconds
D. 2.0m
B. 40 seconds
C. 60 seconds
2. PHCN measures is electrical
D. 80 seconds
energy in
5. The correct expression for the
A. Wh.
potential at a point, distance r
B. Kwh
from a charge q, in a electric field
C. J
is
D. W.
A.
3. The resultant of two forces is
50N.
If
the
forces
are
perpendicular to each other and
one of them makes an angle 30°
with
the
magnitude.
resultant.
Find
B.
C.
D.
its
6.
A
typical
transistor
characteristic is represented as
A. 100.0N
B. 57.7N
C. 25.0N
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9. An object placed at the bottom
of
a
well
full
of
clear
water
appears closer to the surface due
to
A. refraction.
7. In a discharge tube, most of
the gas is pumped out so that
B. reflection.
C. am inverter
D. a magnifier
electricity is concluded at
10. A boy drags a bag of rice
A. steady voltage
along a smooth horizontal flow
B. high pressure
with a force of 2N applied at an
C. low pressure.
angle of 60° to the flow. The work
D. low voltage.
done after a distance of 3m is
8. I. Moon
A. 6J.
II. Sun
B. 4 J
III. Street light
C. 5 J
IV. Stars
D. 3 J
Which of the above is a natural
source of light?
11. The spheres of masses 5.0kg
and
A. I, II and IV only
B. I, II and III only
C. III and IV only
D. II and IV only
10.0kg
are
0.3m
apart.
Calculate the force of attraction
between them.
A. 3.57 X 10−2 N.
B. 3.71 X 10−2 N.
C. 4.00 X 10−2 N.
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D. 3.50 X 10−2 N.
14.
Transverse
distinguished
12.
When
very
hot
water
is
waves
from
can
be
longitudinal
waves using the characteristic of
poured into two identical thin and
thick
glass
tumblers
in
equal
A. diffraction
volumes, the thick one cracks
B. reflection.
because
C. polarization.
D. refraction.
A. of the even expansion of lass.
B. glass is a good conductor of
15. Which of the following pairs of
heat.
light
C. glass is a crystal
separation in the spectrum of
D. of the uneven expansion of
white light?
rays
shows
the
widest
glass
A. Green and yellow.
13.
B. Blue and red
C. Indigo and violet
D. Orange and red.
16.
The diagram above represents the
stress-strain
for
atypical
rod. What does X represent?
metal
Which of the following graphs
shows the correct vector diagram
A. Yield point
for the circuit above?
B. Breaking point
C. Elastic limit
D. proportional limit
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A. micrometer screw gauge
B. pair of Vernier callipers
C. metre rule
D. pair of dividers.
20.
A
platinum
resistance
17. A transistor functions mainly
thermometer records 3.0W at 0°C
as a
and 8/0w at 100°C. If it records
6.0W in a certain environment,
A. switch and an amplifier
the temperature of the medium is
B. rectifier and an amplifier
C. charge storer and a switch
A. 60°C
D. charge storer and an amplifier
B. 80°C
C. 50°C
18.
A
thin
wire
with
heavy
D. 30°C
weights attached to both ends is
hung over a block of ice resting
21.
on two supports. If the wire cuts
through the ice block while the
lock
remains
solid behind
the
wire, the process is called
A. fusion
B. sublimation
In the diagram above, which of
C. regelation
the angles Ө1, Ө2, Ө3, and Ө4 is
D. condensation.
the angle of deviation of a ray of
light passing through XYZ?
19. The inner diameter of a small
test
tube
can
be
measured
A. Ө2
accurately using a
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B. Ө3
II. They are deflected in a
C. Ө1
magnetic field but not in an
D. Ө4
electric filed.
III.
They
consist
of
fast-
22. Which of the following is the
moving
dimension of pressure?
deflected in an electric filed.
A. M
2 −3
B. ML
D. M
and
A. I only
−2
C. M 2−1
neutrons
B. III only
−2
C. I and II only
−3
D. II and III only.
23. A capacitor 8μF, is charged to
25. A concave mirror has a radius
a potential difference of 100V.
of curvature of 36cm. At what
The
distance from the mirror should
energy
stored
by
the
an object be placed to give a real
capacitor is
image three times the size of the
A. 1.0 x 104
object?
B. 4.0 x 10−2
C. 1.25 x 10
A. 12cm
D. 8.0 x 10
B. 24cm
C. 48cm
24.
Which
of
the
following
D. 108cm
statements correctly describe(s)
cathode rays?
I.
They
particles
consist
carrying
of
tiny
negative
electric charges
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The net capacitance in the circuit
B. 20Hz
shown above is
C. 5780Hz
D. 1000Hz
A. 8.0 μF
B. 6.0 μF
29. A note is called an octave of
C. 2.0 μF
another note when
D. 4.0 μF
A.
the
notes
have
the
same
27. A sonometer wire of length
fundamental frequency
100cm under a tension of 10N,
B. its frequency is half of the first
has
note.
a
frequency
of
250Hz.
Keeping the length of the wire
C. its frequency is twice that of
constant, the tension is adjusted
the first note.
to produce a new frequency of
D. its periodic time is twice that of
350HZ. The new tension is
the first note.
A. 5.1N
30. A metallic strip of iron and
B. 19.6N
brass was heated. Which of the
C. 14.0N
following
D. 7.1N
illustrated the shape of the strip
diagrams
accurately
after heating?
28. In a sound wave in air, the
adjacent
rarefactions
and
compressions are separated by a
distance of 17cm. If the velocity
of the sound wave is 340m
Determine the frequency.
−1
.
31. Which of the following is in a
neutral equilibrium?
A. 10Hz
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A. A heavy weight suspended on a
D. ₦39.00
string
B. The beam of a balance in use
34. The specific latent heat of
C. A heavy-based table lamp
vaporization of a substance is
D. A cone resting on its slant edge
always
32. A convex mirror is used as a
A. less than its specific latent heat
driving mirror because
of fusion
B. equal to its specific latent heat
I. Its image is erect
of fusion
II. It has a large field of view
C. greater than its specific latent
III. It has a long focal length.
of fusion
D. all of the above depending on
Identify
the
CORRECT
the nature of the substance.
statement(s).
35.
A. I and III only
A
hydrometer
is
an
instrument for measuring the
B. I and II only
C. II and III only
A. depth off water in a vessel
D. I, II and III only
B. relative humidity of the air
C. relative density of a liquid by
33. What is the cost of running
finding
five 50W lamps and four 100W
weight
lamps for 10 hours if electrical
D. relative density of a liquid by
energy costs 2 kobo per kWh?
the method of flotation
A. ₦ 0.13
36. A transformer has 300 turns
B. ₦ 0.65
of wire in the primary coil and 30
C. ₦ 3.90
turns in the secondary coil. If the
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the
apparent
loss
in
input voltage is 100 volts, the
39. A magnet is moved through a
output voltage is
coil of wire. The e.m.f. produced
in the wire depends on
A. 10 volts
B. 5 volts
A. the number of turns in the coil
C. 15 volts
B. the strength of magnet
D. 20 volts.
C. the speed at which the magnet
is moved
37. The activity of a radioactive
D. all of the above.
substance depends on
40. A charge of one coulomb
A. temperature and purity
liberated 0.0033g of copper in an
B. purity and age
electrolytic process. How long will
C. temperature and age
it take a current of 2A to liberate
D. age, purity and temperature
1.98g
of
copper
in
such
a
process?
38. The speed of light in air is 3 x
108
−1
. If the refractive index of
A. 30 minutes
light from air-to-water is 4/3,
B. 5 minutes
then which of the following is the
C. 50 minutes
correct value of the speed of light
D. 60 minutes.
in water?
ANSWER KEYS:
A. 4 x 108m
−1
B. 2.23 x 108m
−1
C. 2.25 x 108m
−2
D. 4/9 x 108m
−1
1. A 2. B 3. D 4. D 5. A 6. B 7. C
8. D 9. A 10. C 11. B 12. D 13. A
14. C 15. B 16. A 17. D 18. C
19. B 20. A
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21. B 22. C 23. B 24. D 25. A
26. C 27. B 28. D 29. C 30. A
31. D 32. B 33. A 34. C 35. D
36. D 37. C 38. B 39. D 40. B
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2018 JAMB PHYSICS QUESTIONS
1. A man walks 1 km due east
C.
and then 1km due north. His
movement of electrons
displacement is _____
D. All of the above
A. √2
4. Natural radioactivity consists of
N 45° E
Electric
current
means
the emission of -------.
B. 1km N 30°E
C. 1km N 15° E
A. ∝-particles and β-rays
D. D.√2 km N 60° E
2. The density of 400cm of palm
B. ∝-particles and X-rays
oil was 0.9g before frying. If the
D. γ-rays and X-rays
C. ∝-particles, β-rays and g-rays
density of the oil was 0.6 after
frying, assuming no loss of oil to
5. Which of the following does
spilling, its new volume was
NOT describe the image formed
by a plane mirror?
A. 360
3
B. 600
3
A. Erect
C. 240
3
B. Laterally inverted
D. 800
3
C. Same distance from mirror as
object
3. Which of the following is true of
D. Magnified
an electrical charge?
6.
A. Positive charge means deficit
electrons
B. Negative charge means excess
of electrons
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What is the resultant resistance of
D. streams of electrons
the circuit given above?
9. A narrow beam of white light
A. 8Ω
can be split into different colours
B. 11Ω
by a glass prism. The correct
C. 4Ω
explanation is that
D. 3.6Ω
A.
white
light
is
an
7. Which of the following best
electromagnetic wave
describes
B. the prism has all the colours of
the
energy
changes
which take place when a steam
the white light
engine drives a generator which
C. different colours of white light
lights a lamp?
travel with different speeds in
glass
A.
Heat
→
Light
→
Sound→
Kinetic
D. white light has undergone total
internal reflection in the prism.
B. Heat→ Kinetic → Electricity→
Heat and Light
C.
Kinetic→
10.
Light
→
Heat
→Electricity
D. Electricity →Kinetic→ Heat→
Light
8. Cathode rays are ______
A.
High-energy
electromagnetic
waves
B. protons
Figure 2 represents a block- and-
C. neutrons
tackle pulley system on which an
effort of W Newtons supports a
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load of 120.0N. If the efficiency of
13.
the machine is 40, then the value
equivalent of silver 0.0012g/C/ of
of W is
36.0g of silver is to be deposited
The
electrochemical
by electrolysis on a surface by
A. 28.0 N
passing a steady current for 5.0
B. 48.0 N
minutes, the current must be
C. 288.0 N
D. 50.0 N
A. 6000A
B. 100A
11.
What
type
represented
scheme?
2
1
of
by
+
2
1
reaction
the
→
3
is
following
2
+
1
0n
C. 10A
D. 1A
+
energy
14. Shadows and eclipses result
from the
A. Fusion reaction
B. Fission reaction
A. refraction of light
C. Chain reaction
B. reflection of light.
D. Radioactive decay
C. defraction of light
D. rectilinear propagation of light
12. The amount of heat needed to
raise the temperature of 10kg of
15. Which of the following obeys
copper by 1K its ____
Ohm’s Law?
A. specific heat capacity
A. All metals
B. latent heat
B. Diode only
C. heat capacity
C. All electrolytes
D. internal energy
D. Glass
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16.
Which
of
statements
the
are
following
TRUE
OF
coefficient
of
static
friction
between mass m and the table is
ISOTOPES?
A.
I. Isotopes of an element have
the
same
because
chemical
they
have
properties
the
same
Isotopes
of
C.
D.
number of electrons
II.
B.
elements
are
normally separated using physical
18. Which of the following may be
properties
used to explain a mirage?
III. Isotopes of an element has
the same number of protons in
I. Layers of air near the road
their nuclei.
surface have varying refractive
indices in hot weather
A. I and II only
II.
B. I and III only
become good reflectors in hot
C. II and III only
weather.
D. I, II and III.
III. Light from the sky can be
Road
surfaces
sometimes
reflected upwards after coming
17.
close to and the road surface.
A. I and III only
B. II and III only
C. II only
D. I, II and III
In
the
diagram
above,
the
hanging mass m is adjusted until
m is on the verge of sliding. The
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19. In the diagram below, if the
C. increasing the frequency
atmosphere pressure is 760mm,
D. decreasing the intensity.
the pressure in the chamber G is
22. One of the features of the
fission process is that
A. it leads to chain reaction
B. its products are not radioactive
C. neutrons are not released.
D. the sum of the masses of the
reactants equals the sum of the
A. 660mm
masses of the products.
B. 830mm
C. 690mm
23. The linear expansivity of brass
D. 860mm
is 2 x 10−5
−1
. If the volume of a
piece of brass is 15.00
20. Which of the following has the
3
at 0°C,
what is the volume at 100°C?
lowest internal resistance when
new?
A. Leclanche cell
B. Daniel cell
A. 16.03
3
B. 15.09
3
C. 16.00
3
D. 15.03
3
C. Torch battery
D. Accumulator
24. A lead bullet of mass 0.05kg
is fired with a velocity of 200
21.
The
pitch
of
an
acoustic
device can be increased by
into a lead block of mass 0.95kg.
Given that the lead block can
move
A. decreasing the loudness
−1
freely,
the
final
energy after impact is
B. increasing the amplitude
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kinetic
A. 150 J
resonate with P when set into
B. 100 J
oscillation?
C. 50 J
D. 200 J
25. In a series R-L-C circuit at
resonance, the voltages across
the resistor and the inductor are
20V and 40V respectively. What is
the voltage across the capacitor?
A. U
B. T
C. R and T
D. Q and R
A. 30 V
B. 70 V
28. The time rate of loss of heat
C. 50 V
by a body is proportional to the
D. 40 V
A.
26. If the fraction of the atoms of
a radioactive material left after
120 years is 1/64, what is the
half-life of the material?
temperature
of
its
surroundings
B. temperature of the body
C.
difference
between
the
in
temperature
body
and
its
surroundings
A. 20 years
D. ration of the temperature of
B. 10 years
the
C. 2 years
boy
to
that
of
its
surroundings.
D. 24 years
29. A positive charged rod X is
27. In the diagram below, which
of
the
simple
pendula
will
brought near an uncharged metal
sphere Y and is then touched by a
finger with X still in place. When
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the finger is removed, the result
B. evaporation.
is that Y has
C. boiling.
D. sublimation.
A. no charge and a zero potential
B. a positive charge and a zero
32.
potential.
diagrams represents correctly an
C.
a
negative
charge
and
a
charge
and
a
Which
of
the
following
n-p-n transistor?
positive potential.
D.
a
negative
negative potential.
30. Electrical appliances in homes
are normally earthed so that
A.
a
person
touching
the
appliances is safe from electric
33. The differences observed in
shock.
solids, liquids and gases may be
B. both the a.c. and d.c. sources
accounted for by
can be used.
C. the appliances are maintained
A. their relative masses.
at a higher p.d. than the earth.
B. their melting points.
D. the appliances are maintained
C. the spacing and forces acting
at a lower p.d. than the earth.
between the molecules.
D. the different molecules in each
31. The process whereby a liquid
of them.
turns spontaneously into vapour
is called
34. Convex mirrors are used as
driving mirrors because images
A. regelation
formed are
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A. erect, virtual and diminished
D. south and north.
B. erect, real and diminished
C. erect, virtual and magnified
D.
inverted,
virtual
37.
and
In
homes,
appliances
and
electrical
lamps
diminished.
connected in parallel because
35. Musical instruments playing
A. less current will be used
the
B. less voltage will be used.
same
note
can
be
are
distinguished from one another
C. parallel connection does not
owing to the differences in their
heat up the wires
D. series connection uses high
voltage
A. quality.
B. pitch.
C. intensity
38. An object moves in a circular
D. loudness
path of radius 0.5m with a speed
of 1m
36.
−1
velocity?
A. 8
B. 4
C. 1
In
. What is its angular
the diagram above, if
south-poles
of
two
the
D. 2
−1
−1
−1
−1
magnets
stroke a steel bar, the polarities
39. What effort will a machine of
at T and V will respectively be
efficiency 90% apply to lift a load
of 180N if its efforts arm is twice
A. north and south.
as long as its load arm?
B. south and south.
C. north and north.
A. 100N
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B. 90N
C. 80N
D. 120N
40.
Calculate
the
effective
capacitance of the circuit above.
A. 4μf
B. 3 μf
C. 2 μf
D. 1 μf.
ANSWER KEY
1. A 2. B 3. D 4. C 5. D 6. A 7. B
8. D 9. C 10. B 11. A 12. C 13. B
14. D 15. A 16. C 17. D 18. A
19. B 20. D
21. C 22. A 23. B 24. C 25. D
26. A 27. B 28. C 29. D 30. A
31. B 32. D 33. C 34. A 35. B
36. C 37. D 38. D 39. A 40. D
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