CONFIDENTIAL 4531

4531PhysicsSeptember20081½ hour

MAKTAB RENDAH SAINS MARAKUBANG PASU

DO NOT OPEN THIS EXAM PAPERS UNTIL INSTRUCTIONS ARE GIVEN.

1. This exam paper consists of two sections: Section A and Section B2. Answer all questions in Section A and Section B.3. Answer all questions in Section B in the space provided.4. Students are allowed to use scientific calculator.

This exam papers consists of 21 printed pages.

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Physics

One hour and thirty minutes

STANDARDISED TEST 4, 2008

FORM 4

Section A Marks

40

Section B

1 (4)

2 (5)

3 (6)

Total (55)

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SECTION AInstructions: Each question has three and four options. Choose the best option for each question.

1. Which of the following unit is the S.I unit for Pressure?

A Pa C cm HgB atm D Torr

2. 1 Nm-2 is equivalent to

A 1 Pa C 76 cm HgB 1 atm D 1.0 × 105 Pa

3. The diagram 1 show the same object placed on the floor in two different orientations.

Diagram 1

When the force applied is constant, as the surface area touch the floor decreases, its pressure

A remains constantB increasesC decreases

4. Which of the following situation has the greatest pressure exerted?

A A boy lying on the mattressB A book resting on a tableC A scissors cutting a piece of paperD A vehicle with wide tyres moving on the sand

5. The diagram 2 shows a container with liquid A.2

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Diagram 2

The pressure at point P is affected by

A size of the containerB surface area of the containerC volume of the liquidD depth from the surface of the liquid

6. Which of the following is a characteristic of the pressure in a liquid?

A The pressure in a liquid acts in all direction.B The pressure in a liquid depends on the area of its surface.C The pressure in a liquid is inversely proportional to its depthD The pressure in a liquid depends on shape or size of the container.

7. Which of the following instrument is used to measure the gas pressure in an enclosed container?

A siphonB barometerC manometerD hydrometer

8. A simple barometer is carried from the ground floor to the 50 th floor of the PETRONAS Twin Tower. At this high altitude, what will happen to the height of the mercury column?

A decreasesB increasesC remains constant

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9. The diagram 3 shows the system of the hydraulic car break. This system is an application of transmission of pressure in liquids.

Diagram 3

The applied principle is

A Archimedes' principleB Bernoulli's principleC Pascal's principle

10. The diagram 4 shows two identical ping-pong ball move closer to each other after a blowing air pass through the region between them.

Diagram 4

When the velocity of air blowing increases in the region between ping-pong ball, the pressure in that region

A increasesB decreasesC remains constant

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11. The buoyant force experienced by an object immersed in a fluid is influenced by

A mass of objectB volume of fluidC density of fluidD density of object

12. Which of the following functions based on the Archimedes’ Principle?

A BarometerB Bourdon gaugeC HydrometerD Bunsen burner

13. The diagram 5 shows a carburetor used for producing petrol vapour in a car engine.

Diagram 5

Which point marked A, B, C or D in the diagram above indicates the air pressure is the lowest?

14. Which of the following is true about buoyant force?

A Buoyant force is a scalar quantity.B Buoyant force is influenced by the density of an object.C Buoyant force is influenced by gravitational acceleration.D A floating object does not experience any buoyant force.

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15. Which of the following is most likely to sink into soft ground?

A A fully loaded lorry with eight wheelsB A fully loaded lorry with six wheelsC A fully loaded lorry with four wheelsD An empty lorry with four wheels

16. Which of the following does apply Bernoulli’s Principle?

A

Hydraulic jacks

C

Submarine

B

Bunsen burner

D

Vacuum cleaner

17. Diagram 6 shows a thumbtack with big head and thus have a big surface area.

Diagram 6

What is the advantage of the big head structure on the thumbtack?

A To reduce the pressure on the thumb.B To increase the pressure on the thumb.C To produce a large force on the thumbtack.D To save material when making the thumbtack.

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18. The diagram 7 shows the cross-section of an aerofoil-shaped wing.

Diagram 7

When air blows across the aerofoil, which of the following shows the correct direction of lift?

A C

B D

19. Gas pressure exists in an enclosed container because of

A a large size of gas moleculesB a large number of gas moleculesC the forces of attraction between gas moleculesD the collisions between gas molecules and the walls of the container

20. The diagram 8 shows the situation of the canvas covering a lorry when the lorry is stationary and when the lorry is moving.

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Diagram 8

Which principle can be used to explain the observation made?

A Archimedes’ Principle.B Bernoulli’s Principle.C Pascal’s Principle.

21. The diagram 9 shows the cross-section of a dam.

Diagram 9

Why does the thickness of the dam increases towards the base of the dam?

A So that more water can be stored.B Water pressure increases with depth.C Less material is needed to build the dam.D The density of water increases towards the base of the dam.

22. Which graph shows the correct relationship between the pressure exerted with the area of contact if the force is kept constant?

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A C

B D

23. Water is filled into four containers of different shapes as shown below in the diagram 10.

Diagram 10

Which of the following is correct about the pressure on the base of the container?

A Pressure P > Pressure Q > Pressure R > Pressure SB Pressure Q > Pressure R > Pressure P > Pressure SC Pressure Q > Pressure R = Pressure R > Pressure SD Pressure P = Pressure Q = Pressure R = Pressure S

24. The diagram 11 shows an equal mass of oil are poured into four different containers.

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Diagram 11

In which container is the smallest pressure exerted by the oil on the base of the container?

A W C YB X D Z

25. The diagram 12 shows a container with three holes of same area P, Q and R on its side. The container is then filled with water. The water from hole R spurts out the furthest because

Diagram 12

A The water pressure at R is the greatest.B The density of water at R is higher than the density of water at P.C The acceleration due to gravity at R is higher than at P and Q

26. The diagram 13 shows a simple hydraulic system. A force of magnitude F is required to be applied to piston R to lift a car of weight W which is supported by piston S.

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Diagram 13

Which of the following statement is correct?

A F is greater than W.B The pressure applied on piston R is greater than the pressure experienced by piston S.C The pressure applied on piston R is the same as the pressure experienced by piston SD The distance moved by piston S is the same as the distance moved by piston S.

27. The diagram 14 shows an object floating on the surface of water.

Diagram 14

Which of the following statements is true?

A The density of the object is greater than the density of the water.B The volume of water displaced is equal to the volume of the object.C The weight of water displaced is equal to the weight of the object.D The mass of the object is equal to the buoyant force on the object.

28. The diagram 15 shows four cubes P, Q, R and S floating on the surface of liquid X.

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Diagram 15

Which comparison is correct about the density of cubes P, Q, R and S?

A P > Q > R > SB S > Q > P > RC Q > P > R > SD R > P > S > R

29. The diagram 16 shows an experiment to determine the buoyant force on an object which is fully immersed in oil.

Diagram 16

Based on the observation shown, what is the magnitude of the buoyant force acting on the object?

A 3 N C 10 NB 7 N D 17 N

30. The diagram 17 shows two identical toy ducks floating on the surface of liquid X and Y.

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Diagram 17

Which of the following statements is true?

A The density of liquid X is less than the density of liquid Y.B The buoyant force acting on the duck in liquid X is higher than the duck in liquid Y.C The buoyant force in liquid X and liquid Y are the same.

31. The diagram 18 shows a mousedeer standing on the back of a crocodile. The weight of the mousedeer is M and the weight of the crocodile is W.

Diagram 18

32. What is the magnitude of the buoyant force acting on them?

A W C W – MB M D W + M

33. The diagram 19 shows a log of wood of mass 150kg floating on the surface of river.( g = 10 ms-2 )

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Diagram 19

What is the buoyant force acting on the log?

A 0 N C 150 NB 100 N D 1500 N

34. The diagram 20 shows a cuboid immersed in water.

Diagram 20

Which surface of the cuboid is acted upon by the largest pressure?

A PQRS C RSWVB TUVW D QRVU

35. “When pressure is applied to an enclosed liquid, the pressure is transmitted equally and in all directions throughout the liquid”. The statement above is known as

A Archimedes’ PrincipleB Bernoulli's PrincipleC Pascal’s Principle

36. The diagram 21 shows a hot-air balloon tied to the ground with a strong length of rope. In which direction is the buoyant force acting on the hot-air balloon as shown in the diagram?

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Diagram 21

37. The diagram 22 shows a hydrometer floating upright in water.

Diagram 22

What will happen to the length of the portion of the hydrometer that is above the surface of the water labeled X if the water is replaced by cooking oil?

A IncreasesB DecreasesC remains unchanged

38. The diagram 23 shows a Bunsen burner.

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Diagram 23

Which of the following statements is correct?

A Gas flows out from the Bunsen burner via the air hole.B Gas flows with low speed inside the cylindrical tube of the Bunsen burner.C Air flows into the Bunsen burner via the air hole.D The atmospheric pressure outside the Bunsen burner is lower than the pressure of the gas

inside the Bunsen burner.

39. Diagram 24 show two identical egg sinks in liquid A and liquid B respectively.

Diagram 24

Which comparison is correct about the density?

A Density of egg > Density of liquid A > Density of liquid BB Density of egg > Density of liquid B > Density of liquid AC Density of liquid B > Density of egg > Density of liquid AD Density of liquid B > Density of liquid A > Density of egg

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40. The diagrams below show a simple mercury barometer.Which diagram is correct to determine the atmospheric pressure?

A C

B D

SECTION B17

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Instructions: Answer all questions in Section B in the space provided.

1. The diagram 1.1 shows a F1 car with a mass of 600 kg.The surface area of tyre in contact with the ground for each tyre is 0.02 m2.( g = 10 ms-2 )

Diagram 1.1

(a) What is meant by pressure? [1]

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(b) Based on diagram 1.1,

(i) Calculate the pressure for each tyre. [2]

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(ii) What will happen to the pressure for each tyre when the car uses wider tyre? [1]

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2. The diagram 1.2 shows an apparatus that the middle part of horizontal tube becomes narrow.

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The apparatus consists of horizontal tube with different diameter but the same diameter of vertical tube. This apparatus is immersed in water and air flows from P to Q.

Diagram 1.2

(a) Name the apparatus used in diagram 1.2 above. [1]

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(b) Name the principle that relates with diagram 1.2 above. [1]

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(c) Based on the water level in tube A and tube D in diagram 1.2,

(i) Mark on the diagram 1.2, the possible water level for tube B and tube C. [2]

(ii) What will happen to the water level in tube A when water is replaced by oil? [1]

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3. The diagram 1.3 shows a simple hydraulic jack with a small piston S and a large piston L with cross-sectional area of 5 cm2 and 25 cm2 respectively.

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A force of magnitude 20 N is applied to the piston S.

Diagram 1.2

Based on diagram 1.2 of a hydraulic jack,

(a) Name the principle that relates with this hydraulic jack system. [1]

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(b) Calculate the upward force produced on piston L. [2]

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(c) Give one characteristic of the hydraulic fluid used in a hydraulic jack system. [1]

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

(d) Hydraulic jack will not function effectively with the existence of air bubble in the hydraulic fluid. Explain why? [2]

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Questions end

Prepared by: Checked by:

……………………………. …………………......................(EN. KAMAL HARMOZA) (EN. MOHD RAHIMY FITRI)Physic Coordinator Form 4 Head of Physic Unit

Approved by:

…………………………………(EN. HASLIMI BIN HASSAN)

Head of Science Department

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