NAMIBIA SENIOR SECONDARY CERTIFICATE
8225/1
PHYSICS ADVANCED SUBSIDIARY LEVEL
PAPER 1 Multiple Choice
1 hour 15 minutes
Marks 40
MOCK EXAMINATION 2023
Additional Materials: Multiple choice answer sheet
Non-programmable calculator
Soft clean eraser
Soft pencil (type B or HB is recommended)
L
VE
INSTRUCTIONS AND INFORMATION TO CANDIDATES
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Write in soft pencil.
Make sure that you receive the multiple choice answer sheet
•
•
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There are forty questions on this paper. Answer all questions.
For each question, there are four possible answers A, B, C and D. Choose the one you consider
correct and record your choice in soft pencil on the separate answer sheet.
If you want to change an answer, thoroughly erase the one you wish to delete.
•
Read the instructions on the answer sheet carefully.
•
•
•
•
Each correct answer will score one mark.
Any rough working should be done in this booklet.
All questions in this paper carry equal marks.
You may use a non-programmable calculator.
D
E
C
N
A
V
D
A
D
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B
SU
This document consists of 18 printed pages.
OHANGWENA DIRECTORATE OF EDUCATION, ARTS & CULTURE
2023 © ODEAC
NSSCAS Physics Paper 1 QP Mock Exams
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Data
speed of light in free space
c = 3.00 × 108 m s-1
elementary change
e = 1.60 × 10-19 C
unified atomic mass unit
1u = 1.66 × 10-27 kg
rest mass of electron
me = 9.11 × 10-31 kg
rest mass of proton
mp = 1.67 × 10-27 kg
acceleration of free fall
g = 9.81 m s-2
NSSCAS Physics Paper 1 QP Mock Exams
3
Formulae
uniformly accelerated motion
s = ut + 12at 2
v 2 = u2 + 2as
work done on/by a gas
W = p∆V
hydrostatic pressure∆p = ρg∆h
Doppler effectf0 =
fgv
(v ± vs)
electric currentI = Anvq
resistors in seriesR = R1 + R2 + ...
1
1
1
resistors in parallel R = R + R + ...
1
2
NSSCAS Physics Paper 1 QP Mock Exams
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1
2
Which is not an International System (S.I.) base unit?
A
second (s)
B
kelvin (K)
C
kilogram (kg)
D
coulomb (C)
An object is in equilibrium under the action of three coplanar forces F, R and W.
The diagram below shows the forces F and W.
W = 4.5 N
F = 6.2 N
The angle between F and W is 90°.
Which row shows the correct magnitude of R and the approximate direction of R?
Magnitude of R / N
A
7.7
B
7.7
C
10.7
D
10.7
Direction of R
NSSCAS Physics Paper 1 QP Mock Exams
5
3
The diagram below shows the oscilloscope trace for an electrical signal.
1 cm
The frequency of the signal is 250 Hz.
What is the time-base setting of the oscilloscope?
4
5
A
1 ms cm−1
B
2 ms cm−1
C
4 ms cm−1
D
8 ms cm−1
A quantity is measured. What is the effect of taking repeated measurements and then averaging?
A
It reduces the effect of both random and systematic errors.
B
It reduces the effect of neither random nor systematic errors.
C
It reduces the effect of random errors only.
D
It reduces the effect of systematic errors only.
A runner travels a distance of 50.4 ± 0.5 m in a time of 8.4 ± 0.2 s.
What is his average speed during this time interval?
A
6.0 ± 0.1 m s–1
B
6.0 ± 0.2 m s–1
C
6.0 ± 0.3 m s–1
D
6.0 ± 0.7 m s–1
NSSCAS Physics Paper 1 QP Mock Exams
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6
A golf ball is dropped from rest onto a hard floor.
The graph shows how the velocity of the ball varies with time as it bounces, from the time of
release.
At which point does the ball reach its maximum height after the first bounce?
+
D
velocity
A
0
B
–
The velocity of an object during the first four seconds of its motion is shown on the graph.
velocity / ms-1
7
time
C
8
6
4
2
0
0
1
2
3
4
time / s
What is the distance travelled by the object in this time?
A
2m
B
8m
C
32 m
D
NSSCAS Physics Paper 1 QP Mock Exams
16 m
7
8
A parachutist falls from rest from a balloon. The variation with time of the vertical velocity of the
parachutist is shown.
In which region is the force due to air resistance much greater than the weight of the parachutist?
B
vertical
velocity
C
A
D
0
0
9
time
A ball of mass 2 kg travelling at 8 m s–1 strikes a ball of mass 4 kg travelling at 2 m s–1. Both balls
are moving along the same straight line as shown.
8 m s–1
2 kg
v
2 m s–1
4 kg
2 kg
4 kg
After collision, both balls move at the same velocity v.
What is the magnitude of the velocity v?
A
10
4 m s–1
B
5 m s–1
C
6 m s–1
D
8 m s–1
Which one of the following statements is always true for inelastic collisions
in an isolated system?
A
Both momentum and kinetic energy are conserved.
B
Both momentum and kinetic energy are not conserved.
C
Momentum is conserved, but kinetic energy not.
D
Kinetic energy is conserved, but momentum not.
NSSCAS Physics Paper 1 QP Mock Exams
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11 The diagram below shows an object submerged in water.
surface of water
submerged object
water
The object is stationary in the water.
Which statement about the upthrust acting on the object is correct?
A
It is zero.
B
It is equal to the mass of the object.
C
It is equal to the weight of the object.
D
It is equal to the volume of the water displaced.
12 What is meant by the term centre of gravity of a body?
A
the geometrical centre of a body
B
the point at which the weight of a body may be taken to act
C
the point on a body about which there is no resultant moment
D
the point on a body where gravity acts
13 A uniform beam of weight 50 N is 3.0 m long and is supported on a pivot situated 1.0 m from one
end. When a load of weight W is hung from that end, the beam is in equilibrium, as shown in the
diagram.
3.0 m
1.0 m
pivot
W
What is the value of W ?
A
25 N
B
50 N
C
75 N
D
NSSCAS Physics Paper 1 QP Mock Exams
100 N
9
14 The diagram shows a man using a key to open a valve to release water at a dam.
0.5 kN
0.5 kN
0.4 m
key
What is the torque produced by the couple on the key?
A
0.2 Nm
B
0.4 Nm
C
400 Nm
D
200 Nm
15 A mass is suspended from a roof by cable X. It is then attached to a vertical wall by a second
cable Y, as shown in the diagram.
X
Y
mass
Which diagram correctly shows all the forces acting on the mass?
A
B
C
NSSCAS Physics Paper 1 QP Mock Exams
D
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16 The diagram shows a U-tube filled with a liquid of density 800 kg m–3.
p
2.0 cm
2.0 cm
original level
of liquid
The left-hand side of the U-tube is open to the atmosphere. A pressure p is applied to the
right-hand side causing a vertical movement of 2.0 cm in the liquid on each side of the U-tube.
By which amount does the value of p exceed atmospheric pressure?
A
31.4 kPa
B
15.7 kPa
C
314 Pa
D
157 Pa
17 A weight W hangs from a trolley that runs along a rail. The trolley moves horizontally through a
distance p and simultaneously raises the weight through a height q.
trolley
rail
Y
r
q
X
weight W
p
As a result, the weight moves through a distance r from X to Y. It starts and finishes at rest.
How much work is done on the weight during this process?
A
Wp
B
W(p + q)
C
Wr
D
Wq
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11
18 The diagram represents a plucked stretched string vibrating in a vertical plane.
position 2
position 3
position 1
Which changes in the string’s energy occur as the string moves from position 2 to position 3?
kinetic
energy
gravitational
potential energy
elastic
potential energy
A
decreases
decreases
increases
B
decreases
increases
increases
C
increases
decreases
decreases
D
increases
increases
decreases
19 A typical power station, burning a fossil fuel, produces 1200 MW of electrical power. It also
produces 2000 MW of heat energy, which is released into the environment.
What is the efficiency of the power station?
A
20
37.5 %
B
40 %
C
60 %
D
62.5 %
An object is stretched until it reaches the elastic limit.
Which statement must describe the stress on the object when it is at the elastic limit?
A
It is the maximum stress for which the object obeys Hooke’s law.
B
It is the maximum stress that can be applied to the object before it has elastic deformation.
C
It is the maximum stress that can be applied to the object before it has plastic deformation.
D
It is the maximum stress the object can withstand before it breaks.
NSSCAS Physics Paper 1 QP Mock Exams
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21 One end of a wire is fixed to the ceiling and a 3.0 kg object is suspended from its other end.
The wire has diameter 0.62 mm and negligible mass.
What is the tensile stress in the wire?
A
1.5 × 104 Pa
B
2.5 × 106 Pa
C
2.4 × 107 Pa
D
9.7 × 107 Pa
22 A student investigated four different springs A, B, C and D.
A mass of different weight is hung from each spring and the extensions are measured.
The results are shown in the table below.
Weight hung from spring / N
Extension of spring / cm
A
2.0
5.2
B
4.0
4.6
C
6.0
3.5
D
8.0
1.5
All of the springs obey Hooke’s law.
Which spring has the largest elastic potential energy?
23 The displacement against time graph for a progressive wave is shown below.
X
displacement
0
0
Y
time
Which statement is correct about the phase difference z between points X and Y?
A
0 < z < 90°
B
z = 90°
C
z = 180°
D
180° 1 z 1 270°
NSSCAS Physics Paper 1 QP Mock Exams
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24 A car travels at a constant velocity towards a stationary listener. The car's
hooter emits a sound of constant frequency as it approaches the listener.
Which one of the following statements regarding the frequency and
wavelength of the sound of the hooter is correct as observed by the listener?
A
Both the frequency and wavelength have decreased.
B
The frequency has increased while the wavelength has decreased.
C
The frequency has decreased while the wavelength has increased.
D
Both the frequency and wavelength have increased.
25 What is the approximate range of frequencies of infra-red radiation?
A
1 x 103 Hz
to
1 x 109 Hz
B
1 x 109 Hz
to
1 x 1011 Hz
C
1 x 1011 Hz
to
1 x 1014 Hz
D
1 x 1014 Hz
to
1 x 1017 Hz
26 Stationary sound waves are produced in the air inside a tube. The tube is closed at one end.
Which pattern of nodes (N) and antinodes (A) is likely to be correct?
A
tube
N
tube
A
tube
N
N
A
A
N
N
N
A
B
C
D
N
A
A
A
tube
27 In an experiment to demonstrate diffraction, water waves move through a gap in a barrier. Very
little diffraction is observed.
To increase the amount of diffraction, the gap width and the wavelength can be changed.
Which row will definitely increase the diffraction?
gap width
wavelength
A
larger
longer
B
larger
shorter
C
smaller
longer
D
smaller
shorter
NSSCAS Physics Paper 1 QP Mock Exams
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28 Waves are emitted from two coherent sources.
Which statement about the waves must be correct?
A
They are in phase.
B
They are transverse waves.
C
They have a constant phase difference.
D
They have the same amplitude.
29 The diagram below shows waves generated by two coherent sources, S1 and S2.
The solid lines represent crests and the broken (dashed) lines represent
troughs.
P
R
Q
S1
S
S2
Destructive interference occurs at points ...
A
Q and R.
B
Q and S.
C
Q and P.
D
R and S.
30 A diffraction grating is used to measure the wavelength of monochromatic light, as shown in the
diagram.
grating
70.0°
monochromatic
light
The spacing of the slits in the grating is 1.00 x 10–6 m. The angle between the first order diffraction
maxima is 70.0°.
What is the wavelength of the light?
A
287 nm
B
470 nm
C
574 nm
D
940 nm
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15
31 The diagrams show parallel metal plates connected to a high tension voltage supply.
A
500 V
+
B
-
500 V
C
+
200 V
+
-
500 V
D
-
+
-
In which diagram is the electric field between the plates the greatest?
32 When a charged sphere discharges to earth, a spark is formed. The discharge takes 30 µs and
the average current is 2.4 mA.
What is the charge transferred from the sphere to earth?
A
7.2 × 10–8 C
B
1.4 × 10–7 C
C
72 C
D
NSSCAS Physics Paper 1 QP Mock Exams
80 C
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33 The circuit diagram shows a battery connected in series with an ammeter and a component, X.
The graph shows the variation of the current in the circuit as the temperature of component X
increases.
A
current
temperature
component X
Which row is correct?
identity of component X
properties of component X
A
metal wire
the resistance decreases as the temperature increases
B
metal wire
the resistance increases as the temperature increases
C
thermistor
the resistance decreases as the temperature increases
D
thermistor
the resistance increases as the temperature increases
34 A cylinder of conducting material has length 6.0 × 10−2 m and diameter 2.0 × 10−2 m. It has
resistance 24
What is the resistivity of the material?
A
0.13 Ω m
B
0.50 Ω m
C
7.9 Ω m
D
25 Ω m
35 Kirchhoff’s laws can be derived from two laws of conservation.
On which laws of conservation do Kirchhoff’s laws depend?
Kirchhoff’s first law
Kirchhoff’s second law
A
charge
current
B
charge
energy
C
current
charge
D
energy
charge
NSSCAS Physics Paper 1 QP Mock Exams
17
36 The diagram shows a junction J in an electric circuit where three conductors X, Y and Z meet.
The diagram also shows the magnitudes and directions of the currents in X and Y.
Y
1A
J
X
2A
Z
What is the magnitude and direction of the current in Z?
magnitude
direction
A
1A
away from J
B
1A
towards J
C
3A
away from J
D
3A
towards J
37 In the circuit below, the voltmeter reads 21 V.
V
A
60 Ω
20 Ω
20 Ω
What is the reading on the ammeter?
A
0.21 A
B
C
0.35 A
D
0.60 A
1.05 A
38 The following represents a sequence of radioactive decays involving two α-particles and one
β-particle.
217
85 At
α
V
α
W
β
X
What is the nuclide X?
A
213
85
At
B
215
77 Ir
C
209
82 Pb
D
NSSCAS Physics Paper 1 QP Mock Exams
217
81Tl
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39 The diagram shows the path of an α-particle travelling through a uniform electric field produced
by charged parallel plates.
charged plate
charged plate
Which diagram shows the path of a proton that enters the same electric field with the same
speed?
A
B
C
D
40 Protons and neutrons consists of up (u) and down (d) quarks.
What is the quark composition of a proton and a neutron?
A
B
C
D
proton
ddd
udd
uuu
uud
neutron
uuu
uud
ddd
udd
NSSCAS Physics Paper 1 QP Mock Exams
MULTIPLE CHOICE ANSWER SHEET - 8225 PHYSICS AS LEVEL
Use a soft pencil (type B or HB) to Shade in the block corresponding to the correct
answer.
Name ………………………………………………………………………
NSSCAS Physics Paper 1 Mock Exams
Grade 12 ……
1
OHANGWENA EDUCATION DIRECTORATE
NSSCAS PHYSICS MOCK EXAMINATION 2023
MARK SCHEME
MAXIMUM MARK: 40
SYLLABUS/COMPONENT: 8225/01
PHYSICS
Paper 1 (Multiple Choice (AS))
NSSCAS Physics Paper 1 MS Mock Exams
2
Question Number
Answer Key
Question Number
Answer Key
1
D
21
D
2
A
22
C
3
A
23
D
4
C
24
B
5
B
25
C
6
C
26
C
7
D
27
C
8
C
28
C
9
A
29
B
10
C
30
C
11
C
31
D
12
B
32
A
13
A
33
C
14
D
34
A
15
C
35
B
16
C
36
C
17
D
37
C
18
B
38
C
19
A
39
B
20
C
40
D
NSSCAS Physics Paper 1 MS Mock Exams