General1 [48 marks]
1.
[Maximum mark: 1]
23M.1.HL.TZ2.37
Light of frequency f is incident on a metallic surface of work function
W. Photoelectrons with a maximum kinetic energy Emax are emitted. The
frequency of the incident light is changed to 2f .
What is true about the maximum kinetic energy and the work
function?
Maximum kinetic energy
Work function
A.
less than 2Emax
unchanged
B.
less than 2Emax
greater than W
C.
greater than 2Emax
unchanged
D.
greater than 2Emax
greater than W
Markscheme
C
[1]
2.
[Maximum mark: 1]
A rectangular sheet of paper has dimensions of (30.0 ± 0.5) cm and
(20.0 ± 0.5) cm.
22N.1.SL.TZ0.1
What is the percentage uncertainty of the perimeter of the paper?
A. 1 %
B. 2 %
C. 2.5 %
D. 4 %
Markscheme
B
[1]
3.
[Maximum mark: 1]
Two forces, F and G, act on a system.
22N.1.SL.TZ0.2
F is reversed in direction and G is halved.
Which vector correctly represents the new resultant force?
[1]
Markscheme
D
4.
[Maximum mark: 1]
A projectile is launched with a velocity u at an angle θ to the
horizontal. It reaches a maximum height s. What is the time taken to
reach the maximum height?
A.
22N.1.SL.TZ0.4
2s
u cos θ
B.
2s
C.
u cos θ
D.
u sin θ
g
g
g
Markscheme
D
[1]
5.
[Maximum mark: 1]
The diagram shows the trajectory of a projectile and the velocity v of
the projectile at point P in its trajectory. P is located before the
projectile reaches the peak altitude. Air resistance acts on
the projectile. The acceleration of the projectile at P is a.
22N.1.HL.TZ0.5
What are the magnitudes of the horizontal component and the vertical
component of the acceleration of the projectile at P?
[1]
Markscheme
B
6.
[Maximum mark: 1]
What is the order of magnitude of the wavelength of visible light?
22M.1.SL.TZ1.1
A. 10−10 m
B. 10−7 m
C. 10−4 m
D. 10−1 m
[1]
Markscheme
B
7.
[Maximum mark: 1]
The magnitude of the resultant of two forces acting on a body is 12 N.
Which pair of forces acting on the body can combine to produce this
resultant?
22M.1.SL.TZ1.2
A. 1 N and 2 N
B. 1 N and 14 N
C. 5 N and 6 N
D. 6 N and 7 N
Markscheme
D
[1]
8.
[Maximum mark: 1]
A student measures the time for 20 oscillations of a pendulum. The
experiment is repeated four times. The measurements are:
22M.1.SL.TZ1.3
10.45 s
10.30 s
10.70 s
10.55 s
What is the best estimate of the uncertainty in the average time for 20
oscillations?
A. 0.01 s
B. 0.05 s
C. 0.2 s
D. 0.5 s
Markscheme
C
[1]
9.
[Maximum mark: 1]
The radius of a circle is measured to be (10.0 ± 0.5) cm. What is the area
of the circle?
22M.1.SL.TZ2.1
A. (314.2 ± 0.3) cm2
B. (314 ± 1) cm2
C. (314 ± 15) cm2
D. (314 ± 31) cm2
Markscheme
D
[1]
10.
[Maximum mark: 1]
Two different experiments, P and Q, generate two sets of data to
confirm the proportionality of variables x and y. The graphs for the
data from P and Q are shown. The maximum and minimum gradient
lines are shown for both sets of data.
22M.1.SL.TZ2.2
What is true about the systematic error and the uncertainty of the
gradient when P is compared to Q?
[1]
Markscheme
C
11.
[Maximum mark: 1]
The intensity of a wave can be defined as the energy per unit area per
unit time. What is the unit of intensity expressed in fundamental SI
units?
22M.1.HL.TZ1.1
A. kg m−2 s−1
B. kg m2 s−3
C. kg s−2
D. kg s−3
[1]
Markscheme
D
12.
[Maximum mark: 1]
The uncertainty in reading a laboratory thermometer is 0.5 °C. The
temperature of a liquid falls from 20 °C to 10 °C as measured by the
thermometer. What is the percentage uncertainty in the change in
temperature?
22M.1.HL.TZ1.3
A. 2.5 %
B. 5 %
C. 7.5 %
D. 10 %
Markscheme
D
[1]
13.
[Maximum mark: 1]
22M.1.HL.TZ2.16
Four particles, two of charge +Q and two of charge −Q, are positioned
on the x-axis as shown. A particle P with a positive charge is placed on
the y-axis. What is the direction of the net electrostatic force on this
particle?
[1]
Markscheme
D
14.
[Maximum mark: 1]
Which is a vector quantity?
21N.1.SL.TZ0.1
A. Acceleration
B. Energy
C. Pressure
D. Speed
Markscheme
A
[1]
15.
[Maximum mark: 1]
A ball of mass (50 ± 1) g is moving with a speed of (25 ± 1) m s−1. What
is the fractional uncertainty in the momentum of the ball?
21N.1.SL.TZ0.2
A. 0.02
B. 0.04
C. 0.06
D. 0.08
[1]
Markscheme
C
16.
[Maximum mark: 1]
Which lists one scalar and two vector quantities?
21M.1.SL.TZ1.1
A. Mass, momentum, potential difference
B. Mass, power, velocity
C. Power, intensity, velocity
D. Power, momentum, velocity
Markscheme
D
[1]
17.
[Maximum mark: 1]
21M.1.SL.TZ1.2
Two sets of data, shown below with circles and squares, are obtained in
two experiments. The size of the error bars is the same for all points.
What is correct about the absolute uncertainty and the fractional
uncertainty of the y intercept of the two lines of best fit?
[1]
Markscheme
D
18.
[Maximum mark: 1]
A student measures the length l and width w of a rectangular table top.
21M.1.SL.TZ2.1
What is the absolute uncertainty of the perimeter of the table top?
A.
0. 3 cm
B.
0. 6 cm
C.
1.2 cm
D.
2.4 cm
Markscheme
B
[1]
19.
[Maximum mark: 1]
What is the unit of power expressed in fundamental SI units?
A.
kg m s
B.
kg m s
C.
kg m s
D.
kg m s
21M.1.SL.TZ2.2
−3
−1
2
−1
2
−3
[1]
Markscheme
D
20.
[Maximum mark: 1]
Which is a correct unit for gravitational potential?
21M.1.HL.TZ1.31
A. m2 s−2
B. J kg
C. m s−2
D. N m−1 kg−1
Markscheme
A
[1]
21.
[Maximum mark: 1]
Which quantity has the same units as those for energy stored per unit
volume?
20N.1.SL.TZ0.1
A. Density
B. Force
C. Momentum
D. Pressure
Markscheme
D
[1]
22.
[Maximum mark: 1]
A list of four physical quantities is
20N.1.SL.TZ0.2
acceleration
energy
mass
temperature
How many scalar quantities are in this list?
A. 1
B. 2
C. 3
D. 4
[1]
Markscheme
C
23.
[Maximum mark: 1]
Which quantity has the fundamental SI units of kg m–1 s–2?
A. Energy
B. Force
C. Momentum
D. Pressure
Markscheme
D
19N.1.SL.TZ0.1
[1]
24.
[Maximum mark: 1]
An object is held in equilibrium by three forces of magnitude F, G and H
that act at a point in the same plane.
19N.1.SL.TZ0.2
Three equations for these forces are
I. F cos θ = G
II. F = G cos θ + H sin θ
III. F = G + H
Which equations are correct?
A. I and II only
B. I and III only
C. II and III only
D. I, II and III
Markscheme
A
[1]
25.
[Maximum mark: 1]
What are the units of specific energy and energy density?
19N.1.SL.TZ0.28
[1]
Markscheme
B
26.
[Maximum mark: 1]
A student wants to determine the angular speed ω of a rotating object.
The period T is 0.50 s ±5 %. The angular speed ω is
19M.1.SL.TZ1.1
2π
ω =
T
What is the percentage uncertainty of ω?
A. 0.2 %
B. 2.5 %
C. 5 %
D. 10 %
Markscheme
C
[1]
27.
[Maximum mark: 1]
A student models the relationship between the pressure p of a gas and
its temperature T as p = x + yT.
19M.1.SL.TZ1.2
The units of p are pascal and the units of T are kelvin. What are the
fundamental SI units of x and y?
[1]
Markscheme
A
28.
[Maximum mark: 1]
A student measures the radius R of a circular plate to determine its area.
The absolute uncertainty in R is ΔR.
19M.1.SL.TZ2.1
What is the fractional uncertainty in the area of the plate?
A.
2ΔR
R
B. ( ΔR
)
R
C.
2
2πΔR
R
D. π( ΔR
)
R
2
[1]
Markscheme
A
29.
[Maximum mark: 1]
What is the unit of electrical potential difference expressed in
fundamental SI units?
19M.1.SL.TZ2.2
A. kg m s-1 C-1
B. kg m2 s-2 C-1
C. kg m2 s-3 A-1
D. kg m2 s-1 A
Markscheme
C
[1]
30.
[Maximum mark: 1]
An object has a weight of 6.10 × 102 N. What is the change in
gravitational potential energy of the object when it moves through 8.0
m vertically?
19M.1.SL.TZ2.5
A. 5 kJ
B. 4.9 kJ
C. 4.88 kJ
D. 4.880 kJ
Markscheme
B
[1]
31.
[Maximum mark: 1]
A student is verifying the equation
19M.1.HL.TZ1.1
2λY
x =
z
The percentage uncertainties are:
What is the percentage uncertainty in x?
A. 5 %
B. 15 %
C. 25 %
D. 30 %
Markscheme
B
[1]
32.
[Maximum mark: 1]
A proton has momentum 10-20 N s and the uncertainty in the position
of the proton is 10-10 m. What is the minimum fractional uncertainty in
the momentum of this proton?
19M.1.HL.TZ2.2
A. 5 × 10-25
B. 5 × 10-15
C. 5 × 10-5
D. 2 × 104
[1]
Markscheme
C
33.
[Maximum mark: 1]
What is the unit of power expressed in fundamental SI units?
18N.1.SL.TZ0.1
A. kg m s–2
B. kg m2 s–2
C. kg m s–3
D. kg m2 s–3
Markscheme
D
[1]
34.
[Maximum mark: 1]
The length of the side of a cube is 2.0 cm ± 4 %. The mass of the cube is
24.0 g ± 8 %. What is the percentage uncertainty of the density of the
cube?
18N.1.SL.TZ0.2
A. ± 2 %
B. ± 8 %
C. ± 12 %
D. ± 20 %
Markscheme
D
[1]
35.
[Maximum mark: 1]
18N.1.SL.TZ0.15
The graphs show the variation of the displacement y of a medium with
distance x and with time t for a travelling wave.
What is the speed of the wave?
A. 0.6 m s–1
B. 0.8 m s–1
C. 600 m s–1
D. 800 m s–1
Markscheme
[1]
D
36.
[Maximum mark: 1]
18N.1.SL.TZ0.21
Two parallel wires are perpendicular to the page. The wires carry equal
currents in opposite directions. Point S is at the same distance from
both wires. What is the direction of the magnetic field at point S?
[1]
Markscheme
A
37.
[Maximum mark: 1]
A student measures the radius r of a sphere with an absolute
uncertainty Δr. What is the fractional uncertainty in the volume of the
sphere?
A.
(
B.
3
C.
4π
D.
4π(
Δr
r
)
3
Δr
r
Δr
r
Δr
r
3
)
Markscheme
B
18M.1.SL.TZ1.1
[1]
38.
[Maximum mark: 1]
A river flows north. A boat crosses the river so that it only moves in the
direction east of its starting point.
18M.1.SL.TZ1.2
What is the direction in which the boat must be steered?
[1]
Markscheme
C
39.
[Maximum mark: 1]
What is the best estimate for the diameter of a helium nucleus?
18M.1.SL.TZ2.1
A. 10–21 m
B. 10–18 m
C. 10–15 m
D. 10–10 m
Markscheme
C
[1]
40.
[Maximum mark: 1]
The velocities vX and vY of two boats, X and Y, are shown.
18M.1.SL.TZ2.2
Which arrow represents the direction of the vector vX – vY?
[1]
Markscheme
D
41.
[Maximum mark: 1]
Which is a unit of force?
18M.1.SL.TZ2.10
A. J m
B. J m–1
C. J m s–1
D. J m–1 s
[1]
Markscheme
B
42.
[Maximum mark: 1]
How many significant figures are there in the number 0.0450?
17N.1.SL.TZ0.1
A. 2
B. 3
C. 4
D. 5
Markscheme
B
[1]
43.
[Maximum mark: 1]
An object is positioned in a gravitational field. The measurement of
gravitational force acting on the object has an uncertainty of 3 % and
the uncertainty in the mass of the object is 9 %. What is the uncertainty
in the gravitational field strength of the field?
17N.1.SL.TZ0.2
A. 3 %
B. 6 %
C. 12 %
D. 27 %
Markscheme
C
[1]
44.
[Maximum mark: 1]
The diagram shows an analogue meter with a mirror behind the
pointer.
17N.1.SL.TZ0.30
What is the main purpose of the mirror?
A. To provide extra light when reading the scale
B. To reduce the risk of parallax error when reading the scale
C. To enable the pointer to be seen from different angles
D. To magnify the image of the pointer
Markscheme
B
[1]
45.
[Maximum mark: 1]
What is a correct value for the charge on an electron?
17N.1.HL.TZ0.1
A. 1.60 x 10–12 μC
B. 1.60 x 10–15 mC
C. 1.60 x 10–22 kC
D. 1.60 x 10–24 MC
Markscheme
C
[1]
46.
[Maximum mark: 1]
The kinetic energy of a body is determined from measurements of its
momentum p and its mass m.
23M.1.HL.TZ1.2
The percentage uncertainties in the measurements are:
p
±3%
m
±4%
What is the percentage uncertainty in the kinetic energy?
A. 7 %
B. 10 %
C. 13 %
D. 14 %
Markscheme
B
[1]
47.
[Maximum mark: 1]
The kinetic energy of a body is determined from measurements of its
momentum p and its mass m.
23M.1.HL.TZ1.2
The percentage uncertainties in the measurements are:
p
±3%
m
±4%
What is the percentage uncertainty in the kinetic energy?
A. 7 %
B. 10 %
C. 13 %
D. 14 %
Markscheme
B
[1]
48.
[Maximum mark: 1]
Which is correct for a black-body radiator?
21N.1.SL.TZ0.30
A. The power it emits from a unit surface area depends on the
temperature only.
B. It has an albedo of 1.
C. It emits monochromatic radiation whose wavelength depends on
the temperature only.
D. It emits radiation of equal intensity at all wavelengths.
Markscheme
A
© International Baccalaureate Organization, 2024
[1]