journey to success sem 2 f4-2019 · trial kelantan 2014 4. ... trial sbp 2014 3. diagram 3 shows an...

EVERY DAY MAY NOT BE GOOD

BUT THERE IS SOMETHING GOOD IN EVERY DAY

Topic: 2.11 – 2.12

FORCES & PRESSURE LIGHT WAVES

Believe in yourself

Be awesome DREAM BIG…AIM HIGH…NEVER GIVE UP

AWESOME PHYSICS IS AROUND YOU 2

CHAPTER: FORCE & MOTION TRIAL PAHANG 2014

1. Diagram 1.1 show the use of spring in vehicle.

Diagram 1.1

(a) What is the meaning of elasticity?

…………………………………………………………………………………………………………..

[1 mark]

(b) What is the function of the coil spring in the vehicle? …………………………………………………………………………………………………………..

[1 mark]

(c) (i) State the Hooke’s Law. ……………………………………………………………………………………………….................

[1 mark]


(ii) Sketch the Hooke’s Law on the graph below.

[2 marks]

TOTAL 5 marks


TRIAL KEDAH 2013

2. Diagram 2.1 shows a catapult with two elastic cords which is used to shoot out a stone. When the elastic cords are pulled with a force of 12 N, the extension of each elastic cord is 0.2 m.

Diagram 2.1

(a) Name the form of energy stored in the extended elastic cords. …………………………………………………………………………………………………………..

[1 mark]

(b) Calculate the work done to stretch the two elastic cords.

[2 marks]

(c) The elastic cords are then released from the catapult. (i) State the conversion of energy that occurs

…………………………………………………………………………………………………………..

[1 mark]

(ii) The mass of the stone is 0.012 kg. Calculate the velocity of the stone as it leaves the catapult.

[2 marks]

TOTAL 6 marks


TRIAL TERENGGANU 2013

3. Diagram 3.1 and Diagram 3.2 show two springs, M and N which has different thickness. Both springs are made from the same material and pushed by balls of equal mass until the same length. When the forces exerted is removed, the balls move upwards caused by elasticity of material of the springs.

Diagram 3.1

Diagram 3.2

(a) What is meaning of energy? …………………………………………………………………………………………………………..

[1 mark]

(b) Using Diagram 3.1 and Diagram 3.2, compare (i) the thickness of the spring M and N,

…………………………………………………………………………………………………………..

[1 mark]

(ii) the distance bounced of the balls, …………………………………………………………………………………………………………..

[1 mark]

(iii) the elastic potential energy stored by spring M and N. …………………………………………………………………………………………………………..

[1 mark]


(c) Relate the elastic potential energy of the spring to the (i) distance bounced of the ball,

…………………………………………………………………………………………………………..

[1 mark]

(ii) the thickness of material of a spring. …………………………………………………………………………………………………………..

[1 mark]

(d) State the relationship between the thicknesses of a spring to the elastic potential energy stored in the spring. …………………………………………………………………………………………………………..

[1 mark]

(e) State why the balls bounced after the exerted forces is removed. …………………………………………………………………………………………………………..

[1 mark]

TOTAL 8 marks


TRIAL KELANTAN 2014

4. Diagram 4.1 shows a short- put event athlete throwing an iron ball of mass 3.0 kg. The work done by the athlete causes the distance of projection of the iron ball is 12.0 m.

Diagram 4.1

(a) What is the meaning of work? …………………………………………………………………………………………………………..

[1 mark]

(b) The iron ball is thrown by the athlete using the force of 100 N. (i) Calculate the work done by the athlete to throw the iron ball.

[2 marks]

(ii) State the type of energy gained by the iron ball. …………………………………………………………………………………………………………..

[1 mark]

(iii) Determine the horizontal velocity of the iron ball.

[2 marks]


(c) The modifications should be done by the athlete to increase the distance of projection of the iron ball. State the suitable modifications and give one reason for the modifications.

(i) Distance of hand movement: …………………………………………………………………………………………………………..

[1 mark]

(ii) Reason …………………………………………………………………………………………………………..

[1 mark]

(iii) The angle of throwing …………………………………………………………………………………………………………..

[1 mark]

(iv) Reason …………………………………………………………………………………………………………..

[1 mark]

TOTAL 10 marks


TRIAL SBP 2013

5. Diagram 5 shows a worker lifting a load of mass 10 kg using a smooth pulley system. The worker applies a force of 110 N to pull up the load at a distance of 0.5 m.

Diagram 5

(a) What is meant by work?

………………………………………………………………………………………………

[1 mark]

(b) Calculate (i) the work done by the worker

[2 marks]

(ii) the acceleration of the load

[2 marks]

TOTAL 5 marks


TRIAL SBP 2015

6. Diagram 6.1 shows a spring mattress which has elasticity properties.

Diagram 6.1

(a) (i) What is the meaning of elasticity? …………………………………………………………………………………………………………..

[1 mark]

(ii) Give one reason why a spring will not return to its original length when extended to a certain length. …………………………………………………………………………………………………………..

[1 mark]

(b) Diagram 6.2 shows a spring with original length of 10 cm extended to 15 cm when 100 g load is attached to the spring.

Diagram 6.2

(i) What is the extension of the spring? …………………………………………………………………………………………………………..

[1 mark]


(ii) Diagram 2.3 shows a spring system which consists of three identical springs and 100 g load attached.

Diagram 6.3 Calculate the value of y.

[2 marks]

TOTAL 5 marks


TRIAL PERAK 2015

7. Diagram 7 shows a stone on top of a smooth slope.

Diagram 7

The stone slides down the slope and stops at point P.

(a) What is meant by work? ………………………………………………………………………………………………….

[1 mark]

(b) Calculate work done by the stone.

[2 marks]

(c) Based on physics principle, conversion of energy occurs when the stone slides down the slope. State the physics principle and conversion of energy that occurs. …………………………………………………………………………………………………

…………………………………………………………………………………………………

[2 marks]

(d) Calculate velocity of the stone right before reach point P.

[2 marks]

TOTAL 7 marks


CHAPTER: FORCES & PRESSURE TRIAL KELANTAN 2014

1. Diagram 1.1 shows a container filled with liquid X. Liquid X spurts through the hole at horizontal distance, d, due to pressure.

Diagram 1.1

(a) What is the meaning of pressure? …………………………………………………………………………………………………………..

[1 mark]

(b) Give two factors that affect the pressure of liquid …………………………………………………………………………………………………………

…………………………………………………………………………………………………………

[2 marks]

(c) Calculate the pressure of liquid X at the hole. The density of liquid X is 900 kgm-3.

[2 marks]

(d) What happen to the horizontal distance, d, when liquid X is replaced by a higher density of liquid? …………………………………………………………………………………………………………..

[1 mark]

TOTAL 6 marks


TRIAL SELANGOR 2010

2. Diagram 2.1 and Diagram 2.2 show two identical thistle funnels that are covered with rubber sheet and is immersed in measuring cylinders filled with liquid P which density is 0.8 gcm-3. A manometer is connected to the thistle funnel using rubber tube. The depth, h1 and h2 are measured from the surface of the liquid P to the rubber sheet.

Diagram 2.1 Diagram 2.2

(a) State the function of manometer. …………………………………………………………………………………………………………..

[1 mark]

(b) Observe Diagram 2.1 and Diagram 2.2, (i) Compare h1 and h2

…………………………………………………………………………………………………………..

[1 mark]

(ii) Compare the difference in height of the water level in the manometer. …………………………………………………………………………………………………………..

[1 mark]

(iii) Name the physical quantity that represents the difference in height of the water in manometer. …………………………………………………………………………………………………………..

[1 mark]

(iv) Relate the answer in (b)(i) and (b)(ii). …………………………………………………………………………………………………………..

[1 mark]


(v) Relate the depth of the liquid and the physical quantity in(b)(iii).

…………………………………………………………………………………………………………..

[1 mark]

(c) Liquid P with density 0.8 gcm-3 in Diagram 2.2 is then replaced by liquid Q with density 1.0 gcm-3. Predict what will happen to the difference in height of the water in manometer and give your reason. …………………………………………………………………………………………………………

…………………………………………………………………………………………………………

[2 marks]

TOTAL 8 marks


TRIAL SBP 2014

3. Diagram 3 shows an instrument placed in the school laboratory to measure an atmospheric pressure. Given that the density of mercury is 1.36 x 104 kg m-3, and the atmospheric pressure at sea level is 76 cm Hg.

Diagram 3

(a) Name of the instrument in Diagram 3.

…………………………………………………………………………………………………………..

[1 mark]

(b) (i) What is the value of h in cm Hg? …………………………………………………………………………………………………………..

[1 mark]

(ii) Based on the answer in 7(b)(i), determine the value of h in unit Pa.

[2 marks]

(c) What will happens to the length of h when the instrument is brought on a high mountain? …………………………………………………………………………………………………………..

[1 mark]

TOTAL 5 marks



4. Diagram 4 shows a hot air balloon floating stationary in air. Two forces involved are weight and up thrust.

Diagram 4

(a) What is the meaning of weight? …………………………………………………………………………………………………………..

[1 mark]

(b) Using the forces in Diagram 8 explain why the balloon floating stationary in air. …………………………………………………………………………………………………………

…………………………………………………………………………………………………………

[2 marks]

(c) The weight of the balloon is 2000 N and the up thrust is 3200 N. Calculate the acceleration of the balloon.

[2 marks]

TOTAL 5 marks


Edited: 2016

5. Diagram 5 shows a dentist chair for children. The chair uses a hydraulic system.

Diagram 5

(a) Name the physics principle used in a hydraulic system.

…………………………………………………………………………………………………………..

[1 mark]

(b) Explain how the chair can be lifted up when the pedal is pressed down? …………………………………………………………………………………………………………

…………………………………………………………………………………………………………

[2 marks]

(c) Why the system is less effective if air bubbles are present in hydraulic fluid? ……………………………………………………………………………………………….................

[1 mark]

TOTAL 4 marks


TRIAL PAHANG 2016

6. Diagram 6.1 and 6.2 show the situation of the water levels in vertical tubes before and during the time when high speed air flows through the horizontal tube.


(a) What is meant by speed?

………………………………………………………………………………………………………….

[1 mark]

(b) Based on Diagram 6.1 and 6.2: (i) Compare the diameter of horizontal tube at A and B.

…………………………………………………………………………………………………………..

[1 mark]

(ii) Compare the speed of air at A and B. ………………………………………………………………………………………………………….

[1 mark]

(iii) Compare the air pressure at A and B. …………………………………………………………………………………………………………..

[1 mark]

(c) Based on the answers in 6(b), state the relationship between speed of air and (i) air pressure

…………………………………………………………………………………………………………..

[1 mark]

(ii) height of water level in vertical tube …………………………………………………………………………………………………………..

[1 mark]


(d) Name the physics principle involved in 6(c). …………………………………………………………………………………………………………..

[1 mark]

(e) State one application for the physics principle in laboratory. …………………………………………………………………………………………………………..

[1 mark]

TOTAL 8 marks


TRIAL PAHANG SET B 2015

7. Diagram 7.1 and Diagram 7.2 show a student pushes a glass rod into plasticine in two ways with equal forces.


(a) (i) What is the meaning of pressure? …………………………………………………………………………………………………………..

[1 mark]

(ii) Explain why the depth penetrated by the glass rod is not the same. …………………………………………………………………………………………………………..

[1 mark]

(iii) State the relationship between pressure and one other physical quantity to explain the above situations. …………………………………………………………………………………………………………..

[1 mark]

(b) A four wheel drive (4WD) vehicle can move in a muddy road. It has four tires and the area in contact with the muddy road for each tire is 0.45 m2.

(i) Calculate the total area of the tires that contact to the muddy road.

[1 mark]


(ii) Calculate the pressure act to the muddy road if the total mass of the vehicle is 7623 kg.

[2 marks]

(c) Explain why a normal car with smaller mass still cannot use in muddy road? Use your knowledge regarding pressure. …………………………………………………………………………………………………………..

[1 mark]

TOTAL 7 marks


EDITED 2017

8. Diagram 8 shows the cross-sectional the hydraulic brake system of the car.

Diagram 8

(a) (i) Name the physics principle involved in this hydraulic system. ………………………………………………………………………………………...

[1 mark]

(ii) Explain why this brake system is less efficient if there is air bubble trapped in the brake tube. ………………………………………………………………………………………...

[1 mark ]

(b) A force of 15 N is exerted on the brake pedal. The cross-sectional area master piston, front brake cylinder and rear brake cylinder are 5.2 × 10-4 m2, 6.2 × 10-4 m2 and 5.8 × 10-4 m2 respectively.

(i) Calculate the pressure exerted on the oil in the hydraulic brake.

[2 marks]


(iii) Calculate the force that exerted at each of front brake piston.

[2 marks]

TOTAL 6 marks


TRIAL PERAK 2015

9.

Diagram 9

(a) (i) Which of the region P, Q or R will experience low pressure? …………………………………………………………………………………………………...

[1 mark]

(ii) Why does the region experience low pressure? …………………………………………………………………………………………………...

[1 mark]

(b) Suggest one modification that can be made to the insecticide sprayer to produce a bigger spray. Give reason to your answer. …………………………………………………………………………………………………………

…………………………………………………………………………………………………………

[2 marks]

(c) State the physics principle used …………………………………………………………………………………………………............

[1 mark]

TOTAL 5 marks


CHAPTER: LIGHT 1. Diagram 1.1 and Diagram 1.2 show two rectangular glass blocks with different optical density

and refractive index. Ray of light is directed toward the glass blocks with the same angle of incidence 30o.

Density = 2600 kgm-3

Ketumpatan = 2600 kgm-3

Density = 2670 kgm-3 Ketumpatan = 2670 kgm-3


(a) What is meant by refraction? ……………………………………………………………………………………

[1 mark]

(b) Based on Diagram 1.1 and Diagram 1.2,

(i) Compare the angle refraction of the glass blocks.

…………………………………………………………………………………… [1 mark]

(ii) Compare the densities of the glass blocks.

……………………………………………………………………………………

[1 mark ]

(iii) Relate the angle of refraction, r and the densities of the glass blocks.

…………………………………………………………………………………… [1 mark]


(c) Calculate the refractive index of the glass block in Diagram 1.2.

[2 marks]

(d) What happens to the speed of light when pass through from less dense to denser medium? ……………………………………………………………………………………

[1 mark]

TOTAL 7 marks



2. Diagram 2 shows the ray diagram of a mirror to show the formation of image I for an object O. F is the focal point and C is the centre of curvature of the mirror.

Diagram 2

(a) Name the type of mirrror used. ……………………………………………………………………………………

[1 mark]

(b) State the light phenomenon involved to form the image I. ……………………………………………………………………………………

[1 mark]

(c) Give one characteristic of the image I. ……………………………………………………………………………………

[1 mark]

(d) What happen to the size of image I when the object O is placed at C. ……………………………………………………………………………………

[1 mark]

TOTAL 4 marks


AKADEMI JPNT 2014

3. Diagram 3.1 shows the side mirrors of a car which helps the driver to see objects behind

the car.

Diagram 3.1

(a) Name the type of mirrror used.

……………………………………………………………………………………

[1 mark]

(b) Give one reason why this type of mirror is used instead of a plane mirror. ……………………………………………………………………………………

[1 mark]

(c) In Diagram 3.2, F is the focal point and C is the center of curvature of a convex mirror.

Diagram 3.2

(i) Complete the ray diagram in Diagram 3.2 to show the position of the image formed.

[2 marks]

TOTAL 4 marks


TRIAL SBP 2016

4. Diagram 4.1 shows a top view of a clock placed in front of a plane mirror. Diagram 4.2 shows the image of the clock in the mirror.

Diagram 4.1

Diagram 4.2

(a) Name the phenomenon involved in the formation of the image. …………………………………………………………………………………………………………………

[1 mark]


(b) Complete the following sentence by ticking (√ ) in the correct box. The image of clock formed by the mirror is at P and is real

at P and is virtual

at Q and is real

[1 mark]

(c) State one other characteristic of the image.

…………………………………………………………………………………………………………………

[1 mark]

(d) State the time shown by the clock. …………………………………………………………………………………………………………………

[1 mark]

TOTAL 4 marks


EDITED 2017

5. Diagram 5.1 shows a path of light ray PO travel from air to a glass block.

Diagram 5.1

(a) What is the meaning of critical angle?

…………………………………………………………………………………………..

[1 mark]

(b) (i) On Diagram 5.1, start from O, draw the path of the light ray passing through the glass block and then through the air again.

[2 marks]

(ii) Name the phenomenon that has occured to the light ray in (b)(i). …………………………………………………………………………………………..

[1 mark]


(c) Diagram 5.2 shows a coin at the base of the beaker which contains a liquid A with the depth of 20 cm. The observer found the image of the coin appears to be 8 cm from the base of the beaker.

Diagram 5.2

(i) Calculate the refractive index of the liquid A.

[2 marks]

(ii) The liquid A is replace with a less dense liquid. What happens to the image of the coin? Explain. ……………………………………………………………………………………………………………

………………………………………………………………………………………………………….. [2 marks]

TOTAL / JUMLAH 8 marks


EDITED 2018

6. Diagram 6 shows the structure of a periscope used in a submarine.

Diagram 6

(a) Two glass prisms must be placed so the observer can see the objects outside the submarine. The

position of one of the glass prisms is shown in Diagram 6.

On Diagram 6,

(i) Draw and shade the second prism. [1 mark]

(ii) Complete the path of the light ray from the object to the observer’s eye.

[1 mark]

(b) Mirror can also be used in periscopes.

(i) State the light phenomenon applied when using mirror. …………………………………………………………………………………………

[1 mark ]

(ii) Give one reason why mirror is not suitable to be used compared to prism. …………………………………………………………………………………………

[1 mark]

TOTAL 4 MARKS


CHAPTER: WAVES 1. Diagram 1 shows the wave entering two different mediums.

Diagram 1

(a) (i) Name the phenomenon involved.

……………………………………………………………………………………………..

[1 mark]

(ii) State the changed of the wavelength of wave after passing through the shallow region? Give a reason. ……………………………………………………………………………………………..

……………………………………………………………………………………………..

[2 marks]

(b) Complete the wave pattern in Diagram 1.

[2 marks]

TOTAL 5 MARKS

Deep areaKawasan dalam

Shallow areaKawasan cetek


2. Diagram 2.1 shows a fishing boat is detecting a shoal of fish by using a sonar system. A high frequency sound wave is sent from a transmitter and a receiver detects the echo.

Diagram 2.1

(a) State the sound wave phenomenon for detecting the shoal of fish ……………………………………………………………………………………………………..

[1 mark]

(b) Give a reason why sonar used a high frequency sound wave. ……………………………………………………………………………………………………..

[1 mark]


(c) A cathode ray oscilloscope, CRO is used to measure the time taken to detect the shoal of fish. The time-base of the CRO is set to 2 s/div and the trace of the wave is shown in Diagram 2.2.

Diagram 2.2

Based on Diagram 2.2, determine

(i) the time taken to detect the shoal of fish, ……………………………………………………………………………………………..

[1 mark]

(ii) the distance between the shoal of fish and the boat. [Given speed of sound wave in water = 1500 ms-1]

[2 marks]

(d) Give another application of high frequency sound wave. ………………………………………………………………………………………………………

[1 mark]

TOTAL 6 MARKS


3. Two boats A and B are anchored at a distance of 21 m from each other on the surface of a lake. Water waves produced by the wind cause boat A to be at the crest and boat B to be at the trough of the same water wave, as shown in Diagram 3. Each boat vibrates up and down 25 times in 10 seconds.

Diagram 3

(a) (i) What meant by wavelength?

……………………………………………………………………………………………..

[1 mark]

(ii) On Diagram 3, label the position of the wavelength. [1 mark]

(b) Calculate

(i) the wavelength of the water waves

[2 marks]

(ii) the frequency of the water waves

[2 marks]


(c) If the vertical height of boat A from the level of boat B is 1.0 m, what is the amplitude of the water waves? …………………………………………………………………………………………………….

[1 mark]

TOTAL 7 MARKS


4. Diagram 4(a) shows the arrangement of Young’s double-slit experiment. A source of white light is directed through a red filter to produce a monochromatic light.

Diagram 4(a)

Diagram 4(b) and Diagram 4(c) show two double slit which have been used in the experiment.

Diagram 4(b) Diagram 4(c)

Diagram 4(d) Diagram 4(e)

Diagram 4(d) and Diagram 4(e) show the fringe pattern produced in the screen.


(a) What is meant by monochromatic light? …………………………………………………………………………………………

[1 mark]

(b) Based on

(i) Diagram 4(b) and 4(c), compare the distance of slit separation, a1 and a2. …………………………………………………………………………………………

[1 mark]

(ii) Diagram (d) and (e), compare the distance of two consecutive dark fringes separation, x1 and x2. …………………………………………………………………………………………

[1 mark]

(iii) State the relationship between the distance of slit separation, a, to the distance of two consecutive dark fringes, x. ………………………………………………………………………………………….

[1 mark]

(iv) State one constant variable in the experiment. ………………………………………………………………………………………….

[1 mark]

(c) Name the phenomenon of light that produces the fringe pattern in Diagram 4(d) and 4(e). ………………………………………………………………………………………….

[1 mark]

(d) Explain how the fringe pattern in Diagram 4(d) and Diagram 4(e) are formed. ……………………………………………………………………………………………………………

……………………………………………………………………………………………………………. [2 marks]

TOTAL 8 marks


ESSAY SECTION B

1. Diagram 1.1 shows a light signal travelling through an optical fibre of glass.

Diagram 1.1

(a) Name the light phenomenon involved at Y.

Namakan fenomena cahaya yang terlibat pada Y. [1 mark]

(b) Using Diagram 1.1,

(i) Compare the density of X and Y.

[1 mark]

(ii) Compare the angle of ϴ and α. [1 mark]

(iii) Explain why the light ray follows the path shown in Diagram 9.1 when it hits the wall of the

optical fibre at Y.

[2 marks]

(c) The optical fibre in Diagram 1.1 can be used in telecommunications and medicine.

As a researcher, you are assigned to investigate the characteristics of a certain type of glass that could be used to make the inner core of the optical fibre as in Diagram 1.1. Using suitable physics concepts, explain the modification that needs to be done to the: (i) Type of glass (ii) Refractive index (iii) Density (iv) Purity (v) Strength and Flexibility

[10 marks]


(d) Diagram 1.2 shows a light ray incident into a glass block.

Diagram 1.2

(i) What is the critical angle of the glass block?

[1 mark]

(ii) Calculate the refractive index for the glass block.

[2 marks]

The light ray is adjusted so that the angle at M is now 48o, as shown in Diagram 1.3.

Diagram 1.3

(iii) Redraw Diagram 1.3, complete the pathway for the light ray.

[1 mark] (iv) Explain your answer in 1(d)(iv).

[1 mark]

TOTAL 20 MARKS


2. Diagram 2.1 shows alternating loud and soft sounds produced by an audio frequency generator through two identical loudspeakers.

Diagram 2.1

Diagram 2.2 shows the alternating loud and soft sounds produced when the audio frequency generator is tuned to produce a high frequency sound waves.

Diagram 2.2

(a) (i) Explain why two loudspeakers are connected to one audio frequency generator.

[1 mark]

(ii) Using Diagram 2.1 and Diagram 2.2, compare the wavelength of the sound waves used and the distance between two consecutive loud sounds. Relate the wavelength of the sounds with the distance between two consecutive loud sounds. Name the wave phenomenon involved.

[4 marks]


(b) Diagram 2.3 shows a woman calling her son at night and her son can hear the sound loudly and clearly.

Diagram 2.3

Diagram 2.4 shows the woman calling her son during day time and her son cannot hear the sound clearly.

Diagram 2.4

(i) Complete the path of propagation of the sound waves in Diagram 2.3 and 2.4

[1 mark]

(ii) With the aid of the diagrams, explain why the above situations occur.

[4 marks]


(c) Diagram 2.5 shows the design of a dish fixed at the hills to receive electromagnet wave for television programs.

Diagram 2.5 You are required to modify the design in Diagram 2.5 so that the reception of the wave signal is excellent. State and explain the modification based on the Physics aspects:

[10 marks]

TOTAL 20 MARKS


ESSAY SECTION C

1. Diagram 1.1 shows an apparatus which is used to determine the density of a liquid. These apparatus is an application of Archimedes’ Principle.

Diagram 1.1

(a) State the Archimedes’ Principle

[1 mark]

(b) Diagram 1.2 shows rod A and rod B of different densities are immersed in water.

Diagram 1.2

Explain why the rods float in water and why B sinks deeper than A.

[4 marks]


(c) You are required to build a hydrometer that can be used to measure densities of concentrated acids. Table 1.1 shows the characteristics of 4 types of hydrometers L, M, N and O.

Hydrometer

Type of material of hydrometer

Diameter of capillary tube/ cm

Density of shots/ kgm-3

Diameter of bottom bulb/

cm

L Plastic 0.5 1000 1.0 M Plastic 2.0 1300 3.0 N Glass 0.5 9800 3.0 O Glass 2.0 8000 1.0

Table 1.1

Based on the table 1.1 Explain the suitable characteristics of the hydrometer so that it can be used to measure different densities of acids. Decide which hydrometer is most suitable and give reasons.

[10 marks]

(d) Diagram 1.3 shows a boat which has a safety limit line, L. The volume of the boat under the line L is 4 m3. The mass of the boat is 250 kg. [density of water : 1000 kgm-3]

Diagram 1.3

(i) Calculate the volume of water displaced by the boat.

(ii) What is the maximum load that can be carried safely by the boat?

[5 marks]

TOTAL 20 marks


2. Diagram 2.1 shows a metal block hanging from a spring balance. Diagram 2.2 shows the metal block immersed in eureka can filled with water.


(a) What is meant by weight? [1 mark]

(b) Based on Diagram 2.1 and 2.2

(i) What is the apparent loss in weight of the metal block?

[1 mark]

(ii) Explain why the spring balance shows a smaller reading.

[1 mark]

(iii) Calculate the volume of water displaced. [Density of water = 1000 kg m-3 , g =10 N kg -1]

[2 marks]


(c) Diagram 2.3 shows a submarine floating in sea water.

Diagram 2.3

(i) State two forces acting on the submarine.

[2 marks]

(iii) Explain how a submarine is able to submerge into deep sea water.

[3 marks]

(d) Diagram 2.4 shows a car hydraulic brake system.

An efficient hydraulic brake system is very important in a car for safety purpose.

Diagram 2.4


Table 2.5 shows four characteristics of a hydraulic brake system, P, Q, R and S with different specifications. You are required to determine the most suitable and efficient hydraulic brake system.

Hydraulic brake system Sistem brek

hidraulik

Type material of brake fluid Jenis bahan bendalir brek

Size of master piston

Saiz omboh utama

Size of salve piston.

Saiz ombah kedua

Type material of the fluid transmission

pipe Jenis bahan yang digunakan untuk

paip penghantaran bendalir

P Oil Minyak

Small Kecil

Big Besar

Steel Besi

Q Water Air

Big Besar

Big Besar

Plastic Plastic

R Gas Gas

Small Kecil

Small Kecil

Plastic Plastic

S Oil Minyak

Big Besar

Small Kecil

Steel Besi

Table 2.5

[10 marks]

TOTAL 20 marks


3. Diagram 3.1 shows the student used a slide projector to display a large sharp image on the screen.

Diagram 3.1

(a) What is meant by focal length? [1 mark]

(b) Based on the diagram 3.1, calculate:

(i) The linear magnification of the image, M.

[1 mark]

(ii) The focal length of lens, f. [2 marks]

(iii) The power of the lens, P.

[2 marks]

(c) Explain why a piece of paper burns when placed under a convex lens aimed towards hot sun rays.

[4 marks]

(d) Diagram 3.2 shows a scientist looking through microscope to examine the small specimen.

Diagram 3.2


Table 3.3 shows four characteristisc of compound microscopes, P, Q, R and S with different specifications. You are required to determine the most suitable simple compound microscopes to examine a small specimen.

Microscope Mikroskop

Eyepiece Kanta mata

Objective lens Kanta objek

Distance between two

lenses Jarak antara

dua kanta

Position of the specimen

Kedudukan spesimen

P +20D +14D > (fo + fe) u < fe Q +14D +20D (fo + fe) u < fo R +20D +14D (fo + fe) fo < u < 2fo S +14D +20D > (fo + fe) fo < u < 2fo

Table 3.3

[10 marks]

TOTAL 20 MARKS


4 Diagram 4.1 and 4.2 show two sets of ripple tanks used to study diffraction of waves.


(a) What is a meaning of diffraction? [1 mark]

(b) (i) Redraw and complete Diagram 4.1 and Diagram 4.2 to show the difference between two

diffraction patterns. [3 marks]

(ii) Which of the diagrams show a bigger effect of diffraction? Explain your answer.

[2 marks]

(c) A certain microwave has a wavelength of 3.0 × 10-2 m. The speed of electromagnetic waves in

vacuum is 3.0 × 108 ms-1.

(i) Calculate the frequency of this microwave. [2 marks]

(ii) When this wave enters a beaker of water, state what will happen to the frequency, wavelength

and speed of the wave.

[3 marks]


(d)

A medical technician is using echo imaging to take a photograph of patient who is suffering from liver problem. The quality of the photograph is depending on the properties of the waves used. Table 4.3 shows 5 types of waves that can be used.

Choice Types of waves Wavelength Amplitude Principle used

M Ultrasonic Long High Diffraction N Ultrasonic Short High Reflection O Intrasonic Long Low Reflection P X-ray Short High Interference

Table 4.3

Explain the properties of the waves needed to produce a photograph with high quality. Determine the most suitable waves to be used and give reasons for your choice.

[10 marks]

TOTAL 20 marks

If it doesn’t CHALLENGE you

It doesn’t CHANGE you

To infinity and beyond… alina iman arif

journey to success sem 2 f4-2019 · trial kelantan 2014 4. ... trial sbp 2014 3. diagram 3 shows an...

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