7/28/2019 Question Physics
1/19
1 4531/2Section A
[60 marks]
Answerall questions in this section.
1. Diagram 1 shows an insecticide spray.
Diagram 1
(a) (i) Which of the region P, Q or R will experience high pressure?_______________________________________________________________
[1 mark]
(ii) Explain why the region experiences high pressure?
_______________________________________________________________
_______________________________________________________________
[1 mark]
(b) State the region that experiences the atmospheric pressure?____________________________________________________________________
[1 mark]
(c) Explain how the insecticide sprays out of the container.____________________________________________________________________
____________________________________________________________________
[2 marks]
(d) Name a physics principle involved in the above observation.____________________________________________________________________
[1 mark]
7/28/2019 Question Physics
2/19
2 4531/22. Diagram 2 shows an incomplete ray diagram of an object O placed in front of a concave
mirror. C is the centre of curvature and F is the focal point of the mirror.
Diagram 2
(a) Name the phenomenon involved in the formation of the image.____________________________________________________________________
[1 mark]
(b) (i) Complete the ray diagram on Diagram 2 to show how the image is formed.[3 marks]
(ii) State one characteristic of the image formed.
_______________________________________________________________
[1 mark]
(iii) Name one application of concave mirror that is used to produce magnified
and upright image.
______________________________________________________________
[1mark
]
7/28/2019 Question Physics
3/19
3 4531/23. Diagram 3.1 shows a Venturi tube. The level of water in the Venturi tube are the same
when both end of the tube are closed. On Diagram 3.2, both ends are open, the speed of
water at P, Q and R are vP, vQ and vRrespectively.
Diagram 3.1
Diagram 3.2
(a) Why are the water levels in Diagram 3.1 the same?____________________________________________________________________
[1 mark]
(b) Based on Diagram 3.2,(i) arrange the speed of water at P, Q and R in an increasing order.
_______________________________________________________________
[1 mark]
(ii) mark the water levels in the Venturi tube in Diagram 3.2, when water flowsthrough the tube.
[2 marks]
(iii) compare the pressure of water at P, Q and R._______________________________________________________________
[1 mark]
(iv) What is the relationship between the speed of water and the pressure of water?_______________________________________________________________
[1 mark]
7/28/2019 Question Physics
4/19
4 4531/2(c) Explain why a person who is standing near a railway track will experience a force
towards the track when a train moves with higher speed on the track.
____________________________________________________________________
____________________________________________________________________
[1 mark]
4. A substance Y of mass 0.5 kg is heated using a heater with a power of 100 W.The temperature-time graph is shown in Diagram 4.
Diagram 4
(a)
What is the temperature of substance Y after 300 s?__________________________________________________________________
[1 mark]
(b) Based on the graph in Diagram 4, calculate(i) the heat energy absorbed by substance Y at region KL.
[2 marks]
(ii) the specific heat capacity of substance Y.
[2 marks]
(iii) the specific latent heat of substance Y.
[2 marks]
7/28/2019 Question Physics
5/19
5 4531/25. Diagram 5 is a set up apparatus used to investigate the relationship between pressure and
temperature of air at constant volume and mass.
Diagram 5
(a) Based on Diagram 5, choose the correct measuring instrument labeled XTick ( / ) the correct answer in the box provided.
Barometer
Bourdon gauge
Manometer
[1 mark]
(b) State the physical quantity measured by X.____________________________________________________________________
[1 mark]
(c) (i) What will happen to the reading of X when the temperature increases?_______________________________________________________________
[1 mark]
(ii) Give one reason for the answer in 5(c)(i).
______________________________________________________________
[1 mark]
7/28/2019 Question Physics
6/19
6 4531/2(d) A car tyre has a pressure of 130 kPa at a temperature of 27C.
Calculate the temperature of the air in the tyre if the pressure increases to 136 kPa?
[3 marks]
6. Diagram 6 shows a coin at the base of the beaker which contains a liquid with the depth of13 cm. The observer found the image of the coin appears to be 5 cm from the base of the
beaker.
Diagram 6
(a) Name the light phenomenon involved.____________________________________________________________________
[1mark]
(b) Explain how this phenomenon occurs.____________________________________________________________________
____________________________________________________________________
[2 marks]
(c) Calculate the refractive index of the liquid.
[2 marks]
7/28/2019 Question Physics
7/19
7 4531/2(d) The liquid is replace with less dense liquid.
(i) What happens to the image of the coin?_______________________________________________________________
[1 mark]
(ii) Give the reason for your answer in (d)(i) base on the concept of apparentdepth.
_______________________________________________________________
_______________________________________________________________
[1 mark]
7. A technician is tracing water pipe line laid underground to detect leakage point. Threetypes of radioisotope is suggested to be used to detect the leakage point of the pipe. Small
amount of radioisotope is dissolved in the water reservoir.
Radioisotope Half life Types of radiation Physical state
Sodium-24 15 hours Gamma Liquid
Iodine-131 8 days Gamma Liquid
Phosphorus-32 15 days beta Solid
Table 7
A Geiger-Muller (G-M) counter is moved over the pipe according to layout plan. At a
point, the G-M counter detected high radiation level indicating the point of leakage.
(a) Based on table 7, state the most suitable properties of the radioisotope used to detectthe leakage. Give reasons for the suitability of the properties.
(i) Half life_______________________________________________________________
[1 mark]
Reason
_______________________________________________________________
[1 mark]
7/28/2019 Question Physics
8/19
8 4531/2(ii) Types of radiation
_______________________________________________________________
[1 mark]
Reason
_______________________________________________________________[1 mark]
(iii) Physical state_______________________________________________________________
[1 mark]
Reason
_______________________________________________________________
[1 mark]
(b) The element Stratium-90 is half life 28 years.(i) Find the time for the activity to reduce to
16
1of the original value.
_______________________________________________________________
[1 mark]
(ii) The number of Stratium atoms at the beginning is 5.0 x 1015.Find the number of atom after 140 years which not yet decay?
_______________________________________________________________
[1 mark]
(c) (i) State one instrument used to detect radioactivity._______________________________________________________________
[1 mark]
(ii) State one advantage of radioisotope.
_______________________________________________________________
[1 mark]
7/28/2019 Question Physics
9/19
9 4531/2
8. Table 8.1 shows three types of remote control toy car and their characteristics.Types of toy car Tyre diametre Mass Voltage of
battery used
Toy car A
4.0 cm 1.3 kg 9.0 V
Toy car B
4.0 cm 2.5 kg 9.0 V
Toy car C
4.0 cm 1.7 kg 9.0 V
Table 8.1
(a) (i) Based on Table 8.1, which toy car is the most difficult to start moving?_______________________________________________________________
[1 mark]
(ii) Give one reason for the answer in 8(a)(i) and state the relationship between the
reason and physics concept involved.
_______________________________________________________________
_______________________________________________________________
[2 marks]
7/28/2019 Question Physics
10/19
10 4531/2(b) Diagram 8.2 shows, Sarah is pushing a 5.0 kg box with difference forces on three
type of rough surface of wooden plane, P, Q and R.
Diagram 8.2
Table 8.2 shows the magnitude accelerations, a and force applied, F to push the box
on each surface of wooden plane.
Wooden Plane P Q R
Acceleration, a (ms-
) 4.0 2.5 4.5
Force, F (N) 50.0 40.0 30.0
Table 8.2
(i) What is the meaning of frictional force?_______________________________________________________________
_______________________________________________________________
[1 mark]
(c) Calculate the friction force of each surface of wooden plane.(i)
Wooden plane P
[2 marks]
(ii) Wooden plane Q
[1 marks]
7/28/2019 Question Physics
11/19
11 4531/2(iii) Wooden plane R
[1 marks]
(d) Determine the most suitable surface of wooden plane to build a slide at childrensplaygrounds. Give a reason.
____________________________________________________________________
____________________________________________________________________
[2 marks]
7/28/2019 Question Physics
12/19
12 4531/2Section B
[20 marks]
Answer any one question from this section.
9. (a) Diagram 9.1 shows two frying pans M and N that are made of different material with
different specific heat capacity are used to boil the same volume of water.
Diagram 9.2 shows the time taken for the water to boil. When boiling, the frying pan
and the water are in thermal equilibrium.
[Assume frying pan M and frying pan N are of the same size and same thickness]
Frying pan M made of aluminium
with specific heat capacity of 900 Jkg-1C-1
Diagram 9.1
Diagram 9.2
(i) What is the meaning of thermal equilibrium?[1 mark]
(ii) Using Diagram 9.1 and Diagram 9.2, compare the specific heat capacity of thefrying pan, the time taken for the water to boil and the change in temperature.
Relate the specific heat capacity of the frying pan with the time taken for the
water to boil.
Make a deduction regarding the relationship between the specific heat capacity
of the frying pan and the rate of change in temperature of the frying pan.
[5 marks]
Frying pan N made of iron with specific
heat capacity of 452 Jkg-1C-1
Water boils after 10 minutes Water boils after 5 minutes
Frying pan M Frying pan N
7/28/2019 Question Physics
13/19
13 4531/2(b) The amount of heat needed to increase the temperature of 1 kilogram water by 1C in
the frying pan M and frying pan N are Q1 and Q2 respectively.
(i) Compare Q1 and Q2.
Give one reason for this answer.
[2marks
]
(ii) Using Diagram 9.1 and Diagram 9.2, name two types of heat that are involved
during heating and boiling.
[2 marks]
(c) Diagram 9.3 shows the cross section of a pressure cooker.
Diagram 9.3
You are required to give some suggestions to design a pressure cooker which can
cook food in a shorter time. Using the knowledge on heat, pressure and the
properties of materials, explain the suggestions based on the following aspects:
(i) material used for the base of the pot.[2 marks]
(ii) material used for the handle of the pot.[2
marks]
(iii) thickness of the wall of the pot.[2 marks]
(iv) safety of the pressure cooker.[2 marks]
(v) way to prevent leakage of steam.[2 marks]
7/28/2019 Question Physics
14/19
14 4531/210. Diagram 10.1 shows the Foothill and Mountain peak of Mount Kinabalu, Sabah.
Diagram 10.1
(a) What is meant by atmospheric pressure?[1 mark]
(b) Using Diagram 10.1, compare the altitude between mountain peak and foothill, theair pressure at mountain peak and foothill and density of air between the two
altitudes.
State the relationship between the altitude and the air pressure. Hence, deduce arelationship between the atmospheric pressure and density of air.
[5 marks]
(c) Diagram 10.2 shows a drinking straw in a glass of water.
Diagram 10.2
Explain how to drink the water by using the drinking straw.
[4 marks]
7/28/2019 Question Physics
15/19
15 4531/2(d) Malaysian Hiking Club is going to organise a climbing expedition to Mount Everest.
As a team advisor, you are required to set designs of equipments are needed for all
team members so that, they can withstand to extreme cold weather along the
expedition, hence help them to reach summit of Everest safely. The summit
temperature averages about -36C, thin air and land floor covered by ice and glacier.
Using your knowledge of forces, pressure, temperature and properties of matter,
state and explain the suggestions based on the following aspects:
(i) The attire of the climber(ii) The type of material used for backpack(iii) The way to breathe in high altitudes(iv) The design of climbing equipment.
[10 marks]
7/28/2019 Question Physics
16/19
16 4531/2Section C
[20 marks]
Answer any one question from this section.
11. Diagram 11 shows a doctor used a thermometer to measure the body temperature of a boy.
Diagram 11
(a) What is the meaning of temperature?[1
mark]
(b) Explain, in terms of thermal equilibrium, how the thermometer reads the bodytemperature of the boy?
[4 marks]
(c) A thermometer which is not calibrated has a mercury column of length 5.0 cm whenthe temperature is 0C and 25.0 cm when the temperature is 100C. The mercury
column is 12.0 cm when put in liquid X.(i) Determine the temperature of liquid X in Kelvin.
[4 marks]
(ii) State a thermometric property used when making of a thermometer.[1 mark]
7/28/2019 Question Physics
17/19
17 4531/2(d) Table 11 shows the characteristics of five thermometers, P, Q, R, S and T.
Thermometer Liquid used Glass walled
bulb
Diameter of
Capillary tube
Glass-bore stem and
cross-section
P Mercury Thin Big
thick and curved
Q Mercury Thick Small
thin and plane
R Mercury Thin Small
thin and curved
S Alcohol Thick Big
thick and plane
T Alcohol Thin Small
thick and curved
Freezing point of mercury = -39C Boiling point of mercury = 360C
Freezing point of alcohol = -112C Boiling point of alcohol = 78C
Table 11
A research project is carried out on the weather of a region with the surrounding
temperature is between -40C to -8C. Thermometer is an equipment to be taken for the
research project.
As a researcher, you are required to determine the most suitable thermometer to be taken
with as one item of the equipment. Study the characteristics of all the five thermometers
based on the following aspects:
- The liquid used- Glass wall bulb- Diameter of capillary tube- Glass bore stem and cross sectionExplain the suitability of the aspects.
Justify your choice.
[10 marks]
7/28/2019 Question Physics
18/19
18 4531/212. Diagram 12.1 shows the hydraulic brake system for a car. The hydraulic brake system used
in an automobile is a multiple system which use Pascals Principle.
Diagram 12.1
(a) State the Pascals Principle.[1 mark]
(b) Explain how the hydraulic brake system above operate to slow down the car.[4 marks]
(c) In a hydraulic brake, force of 600 N is applied to a small piston of area 5 cm 2.Determine
(i) pressure transmitted through the liquid(ii) force exerted on the large piston of area 20 cm2
[5 marks]
7/28/2019 Question Physics
19/19
19 4531/2
(d) A car needs an efficient hydraulic brake system for safety purpose.Table 2 shows the characteristic of four different hydraulic brake.
Hydraulic
brake
Type of
liquid
Ratio of area of large
piston to the area of
small piston
Metal used for brake pad
Melting Point
(C)
Expansion
rate
S Oil 1 576 High
T Alcohol 4 1780 Low
U Oil 10 3500 Low
V Alcohol 6 3110 High
Table 2
Explain the suitability of each characteristic of the hydraulic brake and choose the
most suitable hydraulic brake to be used to stop the car effectively.
[10 marks]
END OF QUESTION PAPER