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Physics – Form 5 Secondary – Track 2 – 2016 Page 1 of 16
DIRECTORATE FOR QUALITY AND STANDARDS IN EDUCATION
Department of Curriculum Management
Educational Assessment Unit
Annual Examinations for Secondary Schools 2016
FORM 5 PHYSICS TIME: 2 hours
Name: _____________________________________ Class: _______________
Answer ALL questions in the spaces provided on the Examination Paper.
All working must be shown. The use of a calculator is allowed.
Where necessary take the acceleration due to gravity 𝐠 = 𝟏𝟎 𝐦/𝐬𝟐.
Marks Grid: For the Examiners’ use ONLY
Question 1 2 3 4 5 6 7 8 9 10 11 12 Th. Prac Total Final Mark
Mark 10 10 10 10 10 10 10 20 20 20 20 20 170 30 200 100
Score
Density m = ρ V
Pressure P = ρ g h F = P A
Moments Moment = F × perpendicular distance
Energy PE = m g h KE =
1
2mv2 Work Done = F s
Work Done = Energy Converted E = P t
Force F = m a W = m g
Motion Average Speed =
total distance
total time s =
(u + v) t
2 s = ut +
1
2at2
v = u + at v2 = u2 + 2as Momentum = m v
Electricity
Q = I t V = I R E = Q V
P = I V R ∝ 𝐿/𝐴 E = I V t
RT = R1 + R2 + R3 1
RT=
1
R1+
1
R2
Electromagnetism N1
N2=
V1
V2
Heat ΔQ = m c Δθ
Waves
η =real depth
apparent depth η =
the speed of light in air
the speed of light in medium
v = f λ
f =1
T
m =hi
ho=
image distance
object distance
Radioactivity A = Z + N
Track 2
Page 2 of 16 Physics – Form 5 Secondary – Track 2 – 2016
Section A: This section has 7 questions. Each question carries 10 marks (70 marks).
1. An archer uses his bow as shown in Figure 1. He pulls and then releases
the string aiming his arrow towards a target.
a) Tick the correct statement. The archer is doing work
when holding the string in the position shown;
after releasing the string to fire the arrow;
as the string is pulled back to the position shown. [1]
b) What type of energy is present when the bow is bent?
_______________________________________________________________________________ [1]
c) The moving arrow has both ______________ energy and gravitational potential energy. [1]
d) The energy mentioned in (c) above changes into two other forms when the arrow hits the target.
Name these forms of energy.
_______________________________________________________________________________ [2]
e) His friend prefers to use a slingshot (hand catapult) instead,
as shown in Figure 2. He fired a small rock of mass 0.2 kg,
vertically upwards so that it rises to a maximum height of
5 m.
i) Underline: When the rock reaches its maximum height
it has (elastic potential energy, kinetic energy,
gravitational potential energy) [1]
ii) Calculate the energy of the rock when it reaches its maximum height.
_______________________________________________________________________________
____________________________________________________________________________ [2]
iii) The rock eventually falls down back to the ground. Calculate the velocity with which it hits the
ground.
_______________________________________________________________________________
_______________________________________________________________________________
____________________________________________________________________________ [2]
Figure 1
Figure 2
string bow
arrow
Physics – Form 5 Secondary – Track 2 – 2016 Page 3 of 16
2. Peter and his family went to a magic show. The diagram below shows an optical illusion used by
magicians. Peter said to his mother that it is sometimes called the ghost theatre illusion.
Figure 3
a) Add rays to show how the image of the actor behind the glass sheet is formed. [2]
b) Label clearly the angle of incidence i and the angle of reflection r. [2]
c) The image formed is called a virtual image. What is meant by a virtual image?
__________________________________________________________________________________
_______________________________________________________________________________ [2]
d) When they arrived home from the magic show Peter wanted to show another optical phenomenon
to his family. He shone a beam containing a mixture of red and blue light into a prism as shown in
Figure 4.
Figure 4
i) On the above diagram draw the path of the blue light as it passes through the prism and its
position on the screen. [3]
ii) Underline: This optical phenomenon is known as (diffraction, dispersion, focusing). [1]
Prism
Scre
en
Red + Blue
Light
Red Light
Page 4 of 16 Physics – Form 5 Secondary – Track 2 – 2016
3. Figure 5 shows the apparatus used to investigate the absorption of radiation from a radioactive source.
Figure 5
Different absorbing materials are placed between the source and the G-M tube. The table below shows
the count rate obtained with each of the four absorbers.
Absorbing material Counts /s
Air 500
Sheet of paper 501
Thin sheet of aluminium 315
Thin sheet of lead 100
a) The source is not emitting alpha particles. How can you tell from the above table?
__________________________________________________________________________________
_______________________________________________________________________________ [2]
b) Is the source emitting beta particles? Explain.
__________________________________________________________________________________
_______________________________________________________________________________ [2]
c) What is the evidence that γ-rays are being emitted?
_______________________________________________________________________________ [2]
d) In a different experiment, a science student placed a radioactive source in front of the Geiger-
Muller tube and measured the count rate every 15 minutes.
Time /min Count rate /min Corrected count rate /min
0 860 830
15 662 632
30 530 500
45 440 410
60 342 312
i) From the table, calculate the background radiation.
____________________________________________________________________________ [1]
Geiger Muller tube
Counter Source
Absorbing material
Physics – Form 5 Secondary – Track 2 – 2016 Page 5 of 16
ii) Define the term half-life.
____________________________________________________________________________ [1]
iii) Estimate the half-life of this radioactive source using the information given in the above table.
_______________________________________________________________________________
____________________________________________________________________________ [2]
4. Rose designed a device to compress crushed material for the school science fair.
The hinge acts as a pivot. A force of 50 N is applied downwards on the right-hand end of the lever
beam. Ignore the weight of the lever beam.
a) State ONE of the conditions necessary for a body to remain in equilibrium.
_______________________________________________________________________________ [1]
b) Calculate the moment of the 50 N force about the hinge.
__________________________________________________________________________________
_______________________________________________________________________________ [3]
c) Underline: The 50 N force exerts a (clockwise, anticlockwise) moment about the hinge. [1]
d) Using the law of moments, calculate the upward force F which the crushed material exerts on the
piston.
__________________________________________________________________________________
_______________________________________________________________________________ [2]
e) The cross-sectional area of the piston in contact with the crushed material is 0.003 m2. Calculate
the pressure exerted on the crushed material by the piston.
_______________________________________________________________________________ [2]
f) Underline. If the cross-sectional area of the piston is increased the pressure on the crushed material
will (increase, remain the same, decrease). [1]
crushed material
piston lever beam hinge
50 N
55 cm 10 cm
F
Page 6 of 16 Physics – Form 5 Secondary – Track 2 – 2016
5. The Universe is everything we can touch, feel, sense, measure or detect. It includes living things,
planets, stars, galaxies, dust clouds, light, and even time. The table below lists some facts about the
Universe that may be True or False.
a) Mark with a [] whether the statement is True or False.
Statement True False
i. The Moon can be observed only during the night.
ii. The Sun is one of the millions of stars in our galaxy.
iii. A planet is stationary and emits light.
iv. There are 9 major planets in our solar system.
v. The Earth spins on its axis once every 24 hours
[5]
b) The Earth experiences four seasons. State ONE factor that causes the seasons on Earth.
__________________________________________________________________________________
_______________________________________________________________________________ [2]
c) Astronomers have discovered a new Solar system. A diagram of this solar system is shown below.
Figure 6
Complete the following sentences by using words from the following list.
universe, planet, orbit, star, milky way, gravitational, comet
i) X is at the centre of the solar system. X is a ____________________________________ [1]
ii) A orbits around X. A is called a ______________________________________________ [1]
iii) The ______________________force keeps A, B,C, D and E orbiting around X. [1]
X
Physics – Form 5 Secondary – Track 2 – 2016 Page 7 of 16
6. The diagram below shows a head-on collision between a car of mass 900 kg and a truck of mass
2000 kg.
Figure 7
a) Calculate the momentum of the car before collision.
__________________________________________________________________________________
_______________________________________________________________________________ [2]
b) Calculate the momentum of the truck before collision.
__________________________________________________________________________________
_______________________________________________________________________________ [2]
c) Taking into consideration that it is a head-on collision, calculate the total momentum before
collision.
_______________________________________________________________________________ [1]
d) What is the value of the total momentum after collision?
_______________________________________________________________________________ [1]
e) On another occasion, a driver accidentally leaves a packet resting on
the roof of his car as shown in the diagram.
i) What happens to the package when the driver brakes suddenly?
_______________________________________________________
_____________________________________________________[1]
ii) Which of Newton’s Laws explains your answer in (i) above?
State this law.
_______________________________________________________________________________
____________________________________________________________________________ [3]
20 m/s 15 m/s
Figure 8
Page 8 of 16 Physics – Form 5 Secondary – Track 2 – 2016
7. A small private plane takes two minutes to travel between two
Greek islands.
a) Mark on Figure 9:
i) the weight of the plane; [1]
ii) the air resistance. [1]
b) The graph below shows the journey of the plane between the two islands.
Figure 10
Use the graph to answer the following questions.
i) Calculate the acceleration of the plane as it takes off.
_______________________________________________________________________________
____________________________________________________________________________ [2]
ii) Mark on the graph the section where the plane flies at constant speed. Label as AB. [1]
iii) How much time does it take the plane to decelerate and land on the other island?
____________________________________________________________________________ [1]
iv) Calculate the total distance travelled by the plane.
_______________________________________________________________________________
_______________________________________________________________________________
____________________________________________________________________________ [2]
v) Each airport has a runway that is about 500 m long. Explain why these airports cannot cater for
aeroplanes with a larger mass.
_______________________________________________________________________________
____________________________________________________________________________ [2]
Figure 9
Physics – Form 5 Secondary – Track 2 – 2016 Page 9 of 16
Section B. This section has 5 questions. Each question carries 20 marks (100 marks).
8. This question is about electromagnetism.
In 1831, Sir Michael Faraday began a great series of
experiments in which he discovered electromagnetic
induction. The principle discovered back then forms the
basis of operation of a modern magnetic rechargeable
torch.
a) When the torch is shaken, the magnet moves through the coil and back again. This movement
generates a voltage across the ends of the coil. The voltage is used to provide current to recharge
the battery in the control unit.
i) Fill in the blanks with the following words:
cut, voltage, current, field
When the magnetic _______________ of the magnet is _______________ by the coil, it
induces a voltage across the coil. [4]
ii) Underline. John increases the induced voltage by shaking the torch (faster, slower). [2]
iii) The torch uses an LED. What does LED stand for? Tick the correct phrase.
Level Energy Distribution
Loud Electric Doorbell
Light Emitting Diode
[1]
iv) In terms of energy, why is an LED better than a filament lamp for this torch?
_______________________________________________________________________________
____________________________________________________________________________ [2]
b) Lilian discovers that
transformers also work by
induction. The diagram in
Figure 14 shows a typical
transformer.
Figure 11
Figure 14
Figure 12
Figure 13
Primary coil Secondary coil
Page 10 of 16 Physics – Form 5 Secondary – Track 2 – 2016
i) Does the 240 V mains provide an alternating current or direct current?
____________________________________________________________________________ [1]
ii) Underline. When current flows through the 8000 turn coil, it produces a (gravitational,
magnetic) field. The soft iron makes this field (stronger, weaker). The other coil experiences a
changing magnetic field and this induces a voltage across it. [4]
iii) Lilian thinks that the diagram shows a step down transformer. Is she correct? Explain.
_______________________________________________________________________________
____________________________________________________________________________ [3]
iv) The transformer has 240 V across the 8000 turns of the primary coil. Given that 6 V are induced
across the secondary coil, calculate the number of turns in the secondary coil.
_______________________________________________________________________________
_______________________________________________________________________________
____________________________________________________________________________ [3]
9. This question is an experimental design about evaporation.
Isaac likes to use aftershave after shaving.
a) Fill in the blanks with the following words:
biggest, temperature, fastest, smell
When Isaac applies aftershave, he feels cooler because the _______________ molecules escape
from the surface. The slower molecules which are left behind have a lower _________ [4]
b) Isaac accidentally left his aftershave plastic bottle on a windowsill where there is direct sunlight.
After a few hours Isaac observes that the plastic bottle expanded as shown in Figures 15 and 16.
Figure 15 Figure 16
i) Underline. While in direct sunlight the (potential, kinetic, chemical) energy of the molecules
increases. The number of collisions with the wall of the container (increases, decreases, remains
the same). [4]
Physics – Form 5 Secondary – Track 2 – 2016 Page 11 of 16
ii) If the aftershave bottle were made of glass and left in the sun, state what would happen to:
the temperature in the bottle ____________________________________________ [2]
the pressure exerted by the aftershave _____________________________________ [2]
c) A scientist has two kinds of aftershaves. He would like to test which aftershave evaporates the
quicker.
i) The scientist has the following apparatus at hand: cotton wool, clamp and stand, two
thermometers, samples of each aftershave (aftershave X and aftershave Y) and a stopwatch.
Show the order in which the experiment is done by adding numbers in the boxes.
Measure temperature at regular time intervals.
Repeat the procedure with aftershave Y.
Start the stopwatch and measure the initial temperature.
1 Dip the cotton wool in aftershave X.
[3]
ii) Mention ONE precaution that he should take.
____________________________________________________________________________ [2]
iii) In which TWO ways should he present his results?
_______________________________________________________________________________
____________________________________________________________________________ [2]
iv) Predict what will happen to the rate of evaporation if the same experiment is repeated by using
an electric fan.
_______________________________________________________________________________
____________________________________________________________________________ [1]
10. This question is about waves.
a) Mattias and Carl make a wave on a rope as shown in Figure 17.
Figure 17
dis
pla
cem
ent
/cm
distance /cm
Page 12 of 16 Physics – Form 5 Secondary – Track 2 – 2016
Determine:
i) the amplitude of the wave. _________ [2]
ii) the wavelength of the wave. ________ [2]
iii) the frequency of the wave, if it travels at 300 cm/s.
_______________________________________________________________________________
____________________________________________________________________________ [3]
b) Some cars have parking sensors fitted to them. Ultrasound is used in these sensors.
Figure 18
i) Underline. The parking sensor sends an ultrasound which is then (reflected, refracted) back to
the car. The (longer, shorter) the time taken for the wave to return, the closer the car is to the
object. [2]
ii) The car and the wall are 170 cm apart. Change this distance to metres. _________ m. [1]
iii) The parking sensor detects the ultrasound after 0.01 s. How long does it take the ultrasound to
travel from the wall to the car?
____________________________________________________________________________ [1]
iv) Calculate the speed of the ultrasound.
_______________________________________________________________________________
_______________________________________________________________________________
____________________________________________________________________________ [3]
v) A typical ultrasound wave used in the car parking sensor has a frequency of 40 000 Hz. Can the
driver of the car hear these ultrasounds? Explain.
_______________________________________________________________________________
____________________________________________________________________________ [4]
vi) Give ONE other use for ultrasound waves apart from parking sensors.
____________________________________________________________________________ [2]
Physics – Form 5 Secondary – Track 2 – 2016 Page 13 of 16
11. This question is about electrical circuits.
An 8 V battery is connected as shown in the circuit of Figure 19.
Figure 19
a) Underline. The 4 Ω and 12 Ω resistors are connected in (series, parallel). [1]
b) Find the total resistance between:
i) points Y and Z;
_______________________________________________________________________________
____________________________________________________________________________ [3]
ii) points X and Z.
____________________________________________________________________________ [2]
c) Calculate the voltage across the 13 Ω resistor when the current flowing through it is 0.5 A.
__________________________________________________________________________________
_______________________________________________________________________________ [2]
d) Complete: A fuse is used in a circuit so that when too much _____________ flows through it, the
fuse ____________. [2]
e) Three fuses are available: 0.2 A, 0.6 A and 1.0 A. Which of these three fuses is the most suitable to
allow a maximum current of 0.5 A to flow through it? ___________________ [1]
f) On the circuit above draw a voltmeter to measure the voltage across the 13 Ω resistor. [2]
g) Find the voltage across YZ. Assume the fuse has no resistance.
_______________________________________________________________________________ [1]
4
13
12 X Y Z
8 V
Page 14 of 16 Physics – Form 5 Secondary – Track 2 – 2016
h) Calculate the current flowing in the 4 Ω resistor.
__________________________________________________________________________________
_______________________________________________________________________________ [2]
i) On the circuit of Figure 19 draw an ammeter to measure the current through the 4 Ω resistor. [2]
j) Find the current flowing in the 12 Ω resistor.
__________________________________________________________________________________
_______________________________________________________________________________ [2]
12. This question is about density and thermal
energy.
Two students, Jasmine and Jake were given an
unknown metal. They wanted to find out the
type of metal it is made up of.
a) Name the instrument needed to find the
mass of the metal.
___________________________________ [1]
b) Jasmine decided to find the density of the
metal. To do so she needed to find the
volume of the metal. She poured some water
in an instrument as shown in Figure 20.
i) What name is given to this instrument?
________________________________ [1]
ii) State ONE precaution that Jasmine should have taken while reading the volume of water.
____________________________________________________________________________ [1]
iii) The volume of the water in Figure 20 (a) is ____________ cm3 [1]
iv) The volume of the water in Figure 20 (b) is ____________ cm3 [1]
v) Calculate the volume of the unknown metal. ________________________________ cm3 [1]
c) Calculate the density of the unknown metal if its mass is 340 g.
__________________________________________________________________________________
_______________________________________________________________________________ [2]
Figure 20 (a) (b)
Physics – Form 5 Secondary – Track 2 – 2016 Page 15 of 16
d) Jake decided to find the specific heat capacity of the metal. The solid has two holes in it. He placed
a thermometer in one hole and an electric heater in the other hole. He wrapped the metal with cotton
wool and connected the heater to a joulemeter. He then switched on the heater and measured the
temperature every 4 minutes. The results are shown in the table below:
i) Why was the metal wrapped with cotton wool?
_______________________________________________________________________________
____________________________________________________________________________ [2]
ii) Plot a graph of Temperature on the y-axis against Time on the x-axis. [5]
iii) Calculate the change in temperature that occurs in 16 minutes.
____________________________________________________________________________ [1]
iv) The mass of the metal is 950 g. Change it to kg. ______________________________ kg. [1]
v) The joulemeter gave a reading of 68400 J. Calculate the specific heat capacity of the metal.
_______________________________________________________________________________
____________________________________________________________________________ [2]
vi) Jasmine and Jake used the table below to find which metal it was. Circle the name of the metal.
Material Magnesium Aluminium Silver Lead
Density g/cm3 1.7 2.7 10.5 11.3
Specific heat
capacity J/(kg °𝐂) 1020 900 235 127
[1]
Temperature /oC 20 40 60 80 100
Time /min 0 4 8 12 16
Page 16 of 16 Physics – Form 5 Secondary – Track 2 – 2016
