OXFORD UNIVERSITY PRESS
NEW SENIOR SECONDARY PHYSICS AT WORK
(SECOND EDITION)
MOCK EXAMINATION (Set 1)
PHYSICS PAPER 1
Time allowed: 2 hours 30 minutes
This paper must be answered in English
GENERAL INSTRUCTIONS
(1)
There are TWO sections, A and B, in this Paper. You are advised to finish Section A in about 50 minutes.
(2)
Section A consists of multiple-choice questions in this question paper, while Section B contains
conventional questions printed separately in Question-Answer Book B.
(3)
Answers to Section A should be marked on the Multiple-choice Answer Sheet while answers to Section B
should be written in the spaces provided in the Question-Answer Book. The Answer Sheet for Section A
and the Question-Answer Book for Section B will be collected separately at the end of the
examination.
(4)
The diagrams in this paper are NOT necessarily drawn to scale.
(5)
The last two pages of this question paper contain a list of data, formulae and relationships which you may
find useful.
INSTRUCTIONS FOR SECTION A (MULTIPLE-CHOICE QUESTIONS)
(1)
Read carefully the instructions on the Answer Sheet. After the announcement of the start of the
examination, you should first insert the information required in the spaces provided. No extra time will be
given after the ‘Time is up’ announcement.
(2)
When told to open this book, you should check that all the questions are there. Look for the words ‘END
OF SECTION A’ after the last question.
(3)
All questions carry equal marks.
(4)
ANSWER ALL QUESTIONS. You are advised to use an HB pencil to mark all the answers on the
Answer Sheet, so that wrong marks can be completely erased with a rubber. You must mark the answers
clearly; otherwise you will lose marks if the answers cannot be captured.
(5)
You should mark only ONE answer for each question. If you mark more than one answer, you will receive
NO MARKS for that question.
(6)
No marks will be deducted for wrong answers.
New Senior Secondary Physics at Work (Second Edition)
Mock Exam (Set 1) Paper 1A
 Oxford University Press 2015
1
Section A
There are 33 questions. Questions marked with * involve knowledge of the extension
component.
1
John measures the energy needed to raise the temperature of various amounts of water in a
beaker by 10 C. The figure below shows his results. According to John’s result, what is the
specific heat capacity of water?
energy / kJ
25
20
15
10
5
0
2
A
4000 J kg–1 C–1
B
4200 J kg–1 C–1
C
4400 J kg–1 C–1
D
5400 J kg–1 C–1
0.1
0.2 0.3 0.4
mass / kg
0.5
Susan wraps a can of soft drink of mass 300 g with a piece of wet cloth. Both the soft drink and
the wet cloth are at room temperature. Then she places the soft drink in front of an operating
fan. After a while, the temperature of the soft drink decreases by 5 C. Assume that the water
takes energy only from the soft drink to evaporate. Find the mass of water evaporated.
Given: Specific heat capacity of the soft drink = 3700 J kg–1 C–1
Specific heat capacity of the water = 4200 J kg–1 C–1
Specific latent heat of vaporization of water = 2.26  106 J kg–1
A
2.13 g
B
2.16 g
C
2.38 g
D
2.46 g
New Senior Secondary Physics at Work (Second Edition)
Mock Exam (Set 1) Paper 1A
 Oxford University Press 2015
2
3
A small amount of crushed ice at 0 C is put into a large cup of cold water at 0 C. Which of
the following statements is correct? Assume there is no heat transfer between the water and the
surroundings.
A
The temperature of the water will not change.
B
The ice will melt.
C
The total mass of ice in the cup will drop because the crushed ice has a much smaller
internal energy than the water in the cup.
D
*4
The total mass of ice in the cup will increase.
A student is studying the relationship between the pressure and the volume of air at constant
temperature using a syringe and a pressure sensor as shown. Which of the following ways is the
most effective to minimize the temperature change of the air?
syringe
pressure sensor
5
A
Pushing the piston quickly.
B
Pushing the piston slowly.
C
Using a smaller syringe
D
Wrapping the syringe with insulating material
Richard stands on a weighing scale calibrated in kilograms in a lift. When the lift accelerates
upwards at 1.5 m s2, the scale reads 68 kg. What is Richard’s mass? (g = 9.81 m s–2)
A
59 kg
B
62 kg
C
68 kg
D
80 kg
New Senior Secondary Physics at Work (Second Edition)
Mock Exam (Set 1) Paper 1A
 Oxford University Press 2015
3
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6
A car travels along a straight road. The figure below shows its accelerationtime graph, taking
its moving direction as positive.
acceleration / m s2
2
0
1
10
16
time / s
If the car’s velocity is 54 km h1 at t = 0, which of the following statements is/are correct?
7
(1)
The car’s velocity is 68 km h1 at t = 16 s.
(2)
The car’s average acceleration in these 16 seconds is 0.875 m s2.
(3)
The car changes its moving direction at t = 10 s.
A
(1) only
B
(2) only
C
(1) and (3) only
D
(1), (2) and (3)
Three blocks X, Y and Z are connected by light inextensible strings and X is held stationary as
shown below. T1 and T2 are the tensions in the two strings.
X
T2
Y
T1
Z
The blocks are released and they fall freely. Which of the following correctly shows the
relationship between T1 and T2 when the blocks are stationary and falling freely?
Stationary
Falling freely
A
T2 = T1
T2 > T1
B
T2 = T1
T2 = T1
C
T2 > T1
T2 > T1
D
T2 > T1
T2 = T1
New Senior Secondary Physics at Work (Second Edition)
Mock Exam (Set 1) Paper 1A
 Oxford University Press 2015
4
8
A boy slides down a slide at a constant speed as shown. The slide is supported at two points X
and Y.
How do the magnitudes of the reaction forces acting on the slide at X and Y change as the boy
slides down?
9
X
Y
A
increases
decreases
B
increases
increases
C
decreases
decreases
D
decreases
increases
A girl stands on a stationary skateboard. Then she starts to walk forwards on the skateboard as
shown. Neglect the friction between the skateboard and the ground.
Which of the following statements is correct?
A
The girl remains at the same position and the skateboard moves backwards.
B
The girl moves forwards and the skateboard moves backwards.
C
The girl moves forwards and the skateboard remains at the same position.
D
Both the girl and the skateboard move forwards.
New Senior Secondary Physics at Work (Second Edition)
Mock Exam (Set 1) Paper 1A
 Oxford University Press 2015
5
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10
Edward and Fred are driving their own cars. Edward’s car has a larger mass than Fred’s. The
two cars collide head on with each other. Edward and Fred have the same mass and both wear a
seat belt. Which of the following statements must be correct?
*11
(1)
The impact forces acting on Edward and Fred have the same magnitude.
(2)
The impact forces acting on the two cars have the same magnitude.
(3)
The changes in velocities of the two cars have the same magnitude.
A
(2) only
B
(3) only
C
(1) and (2) only
D
(1), (2) and (3)
An object is projected horizontally with a speed v from a cliff as shown.
v
cliff
level X
level Y
Which of the following statements is/are correct?
(1)
If the initial speed of the object is increased to 2v, the time needed for it to travel from
level X to level Y will be halved.
(2)
If the initial speed of the object is increased to 2v, the horizontal distance it travels when
it falls from level X to level Y will be doubled.
(3)
If the mass of the object is doubled, the time needed for it to travel from level X to level
Y will be halved.
A
(2) only
B
(1) and (2) only
C
(1) and (3) only
D
(1), (2) and (3)
New Senior Secondary Physics at Work (Second Edition)
Mock Exam (Set 1) Paper 1A
 Oxford University Press 2015
6
12
A ping-pong ball is thrown vertically upwards with an initial speed u. It then falls back to the
initial position. Air resistance is NOT negligible. Which of the following statements is/are
correct?
*13
(1)
The ball’s speed is lower than u when the ball returns to its initial position.
(2)
The total energy of the ball and the air is conserved.
(3)
The net force acting on the ball is zero when the ball reaches its highest position.
A
(1) only
B
(3) only
C
(1) and (2) only
D
(1), (2) and (3)
Two identical balls are suspended by strings from the two ends of a horizontal rod. Each string
is 10 cm long and the rod is 20 cm long. When the rod rotates about its centre at an angular
speed of , both strings make an angle of 30 with the vertical. Find . (g = 9.81 m s–2)

20 cm
10 cm
10 cm
30
30
ball
ball
14
A
0.92 rad s1
B
1.19 rad s1
C
4.76 rad s1
D
6.14 rad s1
Two coherent sources X and Y produce circular water waves in a ripple tank. P is a point where
constructive interference occurs. Which of the following statements about point P is/are
correct?
(1)
A trough from X and a trough from Y arrive at P at the same instant.
(2)
The particle at P is at its equilibrium position at some instants.
(3)
The particle at P always stays at the maximum displacement.
A
(3) only
B
(1) and (2) only
C
(1) and (3) only
D
(2) and (3) only
New Senior Secondary Physics at Work (Second Edition)
Mock Exam (Set 1) Paper 1A
 Oxford University Press 2015
7
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15
The figure shows a stationary wave formed on a string fixed at both ends. At the moment
shown, point X on the stationary wave is moving upwards.
1.5 m
Which of the following statements is/are correct?
*16
(1)
Point Y is momentarily at rest at the moment shown.
(2)
The wavelength of the wave is 1 m.
(3)
The average speeds of points X and Y in one period’s time are the same.
A
(1) only
B
(2) only
C
(1) and (2) only
D
(2) and (3) only
A lens is placed in front of an object. The focal length of the lens is 12 cm. A virtual image is
formed at a distance of 10 cm from the lens. Which of the following could be the lens used and
the object distance?
17
Type of lens
Object distance
(1)
concave
5.5 cm
(2)
concave
60 cm
(3)
convex
5.5 cm
(4)
convex
60 cm
A
(3) only
B
(4) only
C
(1) and (4) only
D
(2) and (3) only
A beam of monochromatic light travels from air into water. How do the speed and the
wavelength of the light change?
A
B
C
D
Speed
remains unchanged
decreases
decreases
decreases
Wavelength
remains unchanged
remains unchanged
decreases
increases
New Senior Secondary Physics at Work (Second Edition)
Mock Exam (Set 1) Paper 1A
 Oxford University Press 2015
8
*18
A monochromatic light ray is directed onto a plane transmission grating and the second-order
bright fringe is produced at 43. What is the maximum order of bright fringe produced?
19
A
2
B
3
C
4
D
5
Three musical notes X, Y and Z are displayed on a CRO screen as shown. The CRO settings for
them are the same.
Note X:
Note Y:
Note Z:
Which of the following statements about the notes is/are correct?
(1)
Note X is louder than note Z.
(2)
Note X has a lower pitch than note Y.
(3)
Notes X and Z have different qualities.
A
(2) only
B
(3) only
C
(1) and (3) only
D
(2) and (3) only
New Senior Secondary Physics at Work (Second Edition)
Mock Exam (Set 1) Paper 1A
 Oxford University Press 2015
9
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20
55
air
medium X
A ray of monochromatic light enters a solid transparent medium X from air. The incident ray
makes an angle of 55 with the boundary plane as shown. Which of the following statements
is/are correct?
(1)
The higher the speed of light in medium X, the smaller the angle of refraction.
(2)
The angle of refraction must be smaller than 35.
(3)
Dispersion of light will occur in medium X.
A
(1) only
B
(2) only
C
(1) and (2) only
D
(1) and (3) only
(For questions 21 and 22.) A longitudinal wave travels past a series of particles on a spring from left
to right with a speed of 40 cm s1. The figure below shows the equilibrium positions of the particles
and their positions at time instant t.
equilibrium
positions
time t
21
22
Which of the following particles is momentarily at rest at time instant t?
A
Particle E
B
Particle F
C
Particle G
D
Particle H
What is the period of the longitudinal wave?
A
0.5 s
B
1.0 s
C
2.0 s
D
Cannot be determined
New Senior Secondary Physics at Work (Second Edition)
Mock Exam (Set 1) Paper 1A
 Oxford University Press 2015
10
23
X
Y
+2 µC
–3 µC
Two small conducting spheres X and Y carrying charges +2 µC and –3 µC respectively are
situated at fixed positions as shown. A positive test charge q is located at a certain position on
the line joining the centres of the spheres. The resultant electrostatic force due to the spheres
acting on q points towards the left. After the spheres have touched each other momentarily and
returned to their original positions, the resultant electrostatic force on q points towards the
right. What is/are the possible location(s) of the test charge q?
24
(1)
To the left of X
(2)
To the right of Y
(3)
Between the spheres
A
(1) only
B
(2) only
C
(3) only
D
(1) and (2) only
Two identical light bulbs P and Q, each of resistance 6 Ω, are connected to a 12-V power
supply as shown. The range of the variable resistor is 0–18 . The power source has negligible
internal resistance. Which of the following statements is/are correct?
12 V
Q
P
(1)
When the variable resistor has zero resistance, bulbs P and Q have the same brightness.
(2)
When the variable resistor is at its maximum resistance, bulb Q has the maximum
brightness.
(3)
Bulb P is always brighter than bulb Q.
A
(1) only
B
(3) only
C
(1) and (3) only
D
(2) and (3) only
New Senior Secondary Physics at Work (Second Edition)
Mock Exam (Set 1) Paper 1A
 Oxford University Press 2015
11
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25
Light bulbs X and Y are connected in series to a power supply. X is rated at ‘12 V, 24 W’ and Y
at ‘6 V, 18 W’. If both bulbs work at or below their rated power, what is the maximum voltage
output from the power supply?
*26
A
6V
B
12 V
C
14 V
D
16 V
A particle of mass m and charge +2e is accelerated between two parallel charged plates X and
Y. It leaves X at speed v and reaches Y at speed 3v as shown. If the distance between the plates
is d, what is the electric field strength between the plates?
V
v
3v
X
A
mv 2
2ed
B
mv 2
ed
C
2mv 2
ed
D
9mv 2
4ed
d
Y
27
Q
P
In the above figure, P and Q are two metal spheres suspended from two insulating strings of
equal length. Which of the following statements is/are correct?
(1)
P and Q carry opposite charges.
(2)
Q must carry a larger net charge than P.
(3)
P and Q are of different mass.
A
(2) only
B
(3) only
C
(1) and (3) only
D
(2) and (3) only
New Senior Secondary Physics at Work (Second Edition)
Mock Exam (Set 1) Paper 1A
 Oxford University Press 2015
12
*28 A piece of wire of length L is bent into a circular loop and is placed in a uniform magnetic
field. The field strength is steadily increasing and a current I is induced in the wire loop. What
will be the current induced if the piece of wire is of length 2L?
A
I
B
29
2I
C
2I
D
4I
A metal rod XY is placed on two smooth parallel conducting rails whose ends P and Q are
connected by a conducting wire. The rails are tilted slightly so that the rod slides to the right
into a uniform magnetic field pointing out of the paper as shown. Which of the following
statements is/are correct when the rod is moving in the magnetic field?
P
X
Q
Y
conducting wire
conducting rails uniform magnetic field
*30
(1)
A current passes from P to Q through the wire.
(2)
There will be no potential difference across X and Y if the conducting wire is broken.
(3)
The rod will slide to the right at a higher rate if the wire connecting P and Q is removed.
A
(1) only
B
(3) only
C
(2) and (3) only
D
(1), (2) and (3)
An electrical appliance rated at ‘12 V, 25 W’ is connected to the 220-V mains through a
step-down transformer. The output voltage of the transformer is 12 V. The efficiency of the
transformer is 90%. Find the current drawn from the mains.
A
114 mA
B
120 mA
C
126 mA
D
140 mA
New Senior Secondary Physics at Work (Second Edition)
Mock Exam (Set 1) Paper 1A
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13
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31
A radioactive source with a half-life of 10 hours is placed in front of a G-M tube. The count
rate measured by the G-M tube is x counts per minute. Estimate the measured count rate after
20 hours. Assume the background count rate is 40 counts per minute.
32
33
A
1
x  20 counts per minute
2
B
1
x  20 counts per minute
2
C
1
x  40 counts per minute
4
D
1
x  30 counts per minute
4
Which of the following statements about radiation safety is/are correct?
(1)
The unit of absorbed dose of ionizing radiation is sievert.
(2)
Radon is one of the major sources of background radiation.
(3)
 radiation cannot cause much harm to our body because it can be stopped by skin.
A
(1) only
B
(2) only
C
(3) only
D
(1) and (2) only
A thorium nuclide undergoes the following decays and becomes Z.
232
90 Th
β
α
β
 Y  Z
 X 
Which of the following statements is/are correct?
(1)
232
90 Th
(2)
X has more protons than Y.
(3)
Y has more neutrons than Z.
A
(1) only
B
(2) only
C
(1) and (3) only
D
(1), (2) and (3)
and Z are isotopes of the same element.
END OF SECTION A
New Senior Secondary Physics at Work (Second Edition)
Mock Exam (Set 1) Paper 1A
 Oxford University Press 2015
14
List of data, formulae and relationships
Data
molar gas constant
Avogadro constant
acceleration due to gravity
universal gravitational constant
speed of light in vacuum
charge of electron
electron rest mass
permittivity of free space
permeability of free space
atomic mass unit
astronomical unit
light year
parsec
Stefan constant
Planck constant
R = 8.31 J mol1 K1
NA = 6.02  1023 mol1
g = 9.81 m s2 (close to the Earth)
G = 6.67  1011 N m2 kg2
c = 3.00  108 m s1
e = 1.60  1019 C
me = 9.11  1031 kg
0 = 8.85  1012 C2 N1 m2
0 = 4  107 H m1
u = 1.661  1027 kg
(1 u is equivalent to 931 MeV)
11
AU = 1.50  10 m
ly = 9.46  1015 m
pc = 3.09  1016 m = 3.26 ly = 206 265 AU
 = 5.67  108 W m2 K4
h = 6.63  1034 J s
Rectilinear motion
For uniformly accelerated motion:
v
=
s
v
=
2
=
u + at
1
ut + at 2
2
u2 + 2as
Mathematics
Equation of a straight line
y = mx + c
Arc length
= r
Surface area of cylinder
= 2rh + 2r2
Volume of cylinder
= r2h
Surface area of sphere
= 4r2
Volume of sphere
4
= πr 3
3
For small angles, sin   tan    (in radians)
Astronomy and Space Science
Energy and Use of Energy
GMm
U =
r
P = AT4
f v λ
 
f 0 c λ0
gravitational potential energy
E
Stefan’s law
A(TH  TC )
Q
=
d
t

U=
d
1
P = Av 3
2
Doppler effect

A
illuminance
Atomic World
Medical Physics
1
2
me vmax = hf   Einstein’s photoelectric equation
2
 m e4 
1 
13 .6

En =  2  2e 2  =  2 eV
n
n 
 8h  0 

energy level equation for hydrogen
atom
h
h
= =
de Broglie formula
p mv


1.22 λ
d
Rayleigh criterion (resolving power)
New Senior Secondary Physics at Work (Second Edition)
Mock Exam (Set 1) Paper 1A
 Oxford University Press 2015
1.22 λ
d
1
power =
f
L = 10 log
I
I0
rate of energy transfer by conduction
thermal transmittance U-value
maximum power by wind turbine
Rayleigh criterion (resolving power)
power of a lens
intensity level (dB)
Z = c
I
( Z  Z1 ) 2
= r = 2
I 0 ( Z 2  Z1 ) 2
acoustic impedance
I  I 0e x
transmitted intensity through a
medium
15
intensity reflection coefficient
Q1Q 2
A1.
E = mcT
energy transfer during
heating and cooling
D1.
F=
A2.
E = lm
energy transfer during
change of state
D2.
E=
A3.
pV = nRT
equation of state for an
ideal gas
D3.
E=
A4.
pV =
1
Nmc 2
3
kinetic theory equation
D4.
R=
A5.
EK =
3RT
2N A
molecular kinetic
energy
D5.
R = R1 + R2
Q
Coulomb’s law
4π 0 r 2
electric field strength due to
a point charge
V
d
electric field between
parallel plates (numerically)
l
resistance and resistivity
A
1
1
1
=
+
R R1 R 2
D6.
v  p
=
t  t
4 π 0 r 2
resistors in series
resistors in parallel
force
D7.
P = IV = I2R
power in a circuit
moment = F  d
moment of a force
D8.
F = BQv sin 
force on a moving charge in
a magnetic field
B3.
EP = mgh
gravitational potential
energy
D9.
F = BIl sin 
force on a current-carrying
conductor in a magnetic
field
B4.
EK =
kinetic energy
D10.
B=
B5.
P = Fv
mechanical power
D11.
B=
B6.
a=
centripetal acceleration
D12.
=N
B7.
F=
Newton’s law of
gravitation
D13.
Vs N s

Vp N p
ratio of secondary voltage
to primary voltage in a
transformer
C1.
y =
fringe width in
double-slit interference
E1.
N = N0ekt
law of radioactive decay
C2.
d sin  = n
diffraction grating
equation
E2.
t1 =
equation for a single
lens
E3.
A = kN
activity and the number of
undecayed nuclei
E4.
E = mc2
mass-energy relationship
B1.
F =m
B2.
C3.
1
mv 2
2
v2
= 2r
r
Gm1 m 2
r
2
λD
a
1 1 1
 =
u v f
New Senior Secondary Physics at Work (Second Edition)
Mock Exam (Set 1) Paper 1A
 Oxford University Press 2015
2
16
0 I
2 πr
 0 NI
l

t
ln 2
k
magnetic field due to a long
straight wire
magnetic field inside a long
solenoid
induced e.m.f.
half-life and decay constant