ujian selaras f4 2009

8/8/2019 ujian selaras F4 2009

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CONFIDENTIAL 4531

4531

Physics

June

2008

1 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 B

2. Answer all questions in Section A and Section B

3. Students are allowed to use scientific calculator.

This exam papers consists of 12 printed pages.

Section A Marks

40

Section B

1 (10)

2 (10)

Total

Physics

One hour and thirty minutes

STANDARDISED TEST 4, 2008

FORM 4


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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 Hg

B 1 atm D 1.0 105

Pa

3. 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 constant

B increases

C decreases

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

A A boy lying on the mattressB A book resting on a table

C A scissors cutting a piece of paper

D A vehicle with wide tyres moving on the sand


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5. Diagram 2 shows a container with liquid A.

Diagram 2

The pressure at point P is affected by

A size of the container

B surface area of the container

C volume of the liquid

D depth from the surface of the liquid

8. 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 depth

D The pressure in a liquid depends on shape or size of the container.

4. Which of the following instrument is used to measure the gas pressure in an enclosed

container?

A siphon

B barometer

C manometer

D hydrometer

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

A decreases

B increases

C unchanged


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5. Diagram 3 shows the system of the hydraulic car break. This system is an application oftransmission of pressure in liquids.

Diagram 3

The applied principle is

A Archimedes' principle

B Bernoulli's principle

C Pascal's principle

6. When the velocity of air blowing in a certain region increases, the pressure in that region

A increases

B decreases

C remains constant

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

A density of object

B density of fluid

C mass of object

D volume of fluid

10. Which of the following functions based on the Archimedes Principle?

A Barometer

B Bourdon gauge

C Hydrometer

D Bunsen burner

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

A A floating object does not experience any buoyant force.

B Buoyant force is influenced by the density of an object.


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C Buoyant force is influenced by gravitational acceleration.

D Buoyant force is a scalar quantity.

13. Mass of a car is 1200 kg. The total pressure on four tyres is 200 kPa.

What is the area of each tyre in contact with the ground?

A 0.06 m2 C 0.006 m

2

B 0.24 m2 D 0.024 m

2

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

A A fully loaded lorry with eight wheels

B A fully loaded lorry with six wheels

C A fully loaded lorry with four wheels

D An empty lorry with four wheels

15. Which of the following does not apply Bernoullis Principle?

A Wind surfing

B Hot air balloon

C Bunsen Burner

D Insecticide Spray

16. What are the two physical quantities involved in Bernoullis Principle?

A Velocity and kinetic energy.

B Temperature and pressure.

C Pressure and force.D Velocity and pressure.

17. The head of a thumbtack is big and thus have a big surface area. What is the advantage of thisstructure in the thumbtack?

A To save material when making the thumbtack.

B To reduce the pressure on the thumb.

C To produce a large force on the thumbtack.

D The thumbtack does not break easily.

18. When pressure is applied to an enclosed liquid, the pressure is transmitted equally and in alldirections throughout the liquid. The statement above is known as

A Archimedes Principle

B Bernoulli's Principle

C Pascals Principle


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19. Gas pressure exists in an enclosed container because of

A a large size of gas molecules

B a large number of gas molecules

C the forces of attraction between gas molecules

D the collisions between gas molecules and the walls of the container

20. The diagram shows the cross-section of an aerofoil. When air blows across the aerofoil, whichof the regions marked A, B, C or D experiences the lowest pressure?

21. The diagram shows the situation of the canvas covering a lorry when the lorry is stationary

and when the lorry is moving.

Which principle can be used to explain the observation made?

A Archimedes Principle.

B Bernoullis Principle.

C Pascals Principle.

22. The diagram shows the cross-section of a dam.


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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.

23. Which graph shows the correct relationship between the pressure exerted with the area of

contact if the force is kept constant?

A C

B D

24. Which of the following graphs correctly shows the relationship between the magnitude of the

buoyant force and the depth to which an object is immersed into a liquid?


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A C

B D

25. Oil, water and mercury are filled into four containers of different shapes as shown below. The

pressure on the base of the container is the greatest in container

A P C R

B Q D S

26. When only water is filled into four containers of different shapes as shown below.Which of the following is correct about the pressure on the base of the container?


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A Pressure P > Pressure Q > Pressure R > Pressure S

B Pressure Q > Pressure R > Pressure P > Pressure S

C Pressure Q > Pressure R = Pressure R > Pressure S

D Pressure P = Pressure Q = Pressure R = Pressure S

27. Equal masses of oil are poured into four different containers as shown.

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

A W C YB X D Z

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

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

29. The diagram shows a simple hydraulic system. A force of magnitude F is required to beapplied to piston R to lift a car of weight W which is supported by piston S. Which of the

following statement is correct?


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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.

30. The diagram shows an object floating on the surface of water. Which of the followingstatements 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.

31. The diagram shows an experiment to determine the buoyant force on an object which is fully

immersed in oil. Based on the observation shown, what is the magnitude of the buoyant forceacting on the object?


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A 3 N C 10 N

B 7 N D 17 N

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

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.

33. The diagram shows a mousedeer standing on the back of a crocodile. If the weight of themousedeer is M and the weight of the crocodile is W, what is the magnitude of the buoyantforce acting on them?

A W C W M

B M D W + M


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34. The diagram shows a log of wood of mass 150kg floating on the surface of Rejang River.

What is the buoyant force acting on the log?( g = 10 ms-2 )

A 0 N C 150 N

B 100 N D 1500 N

35. The diagram shows a cuboid immersed in water. Which surface of the cuboid is acted upon bythe largest pressure?

A PQRS C RSWV

B TUVW D QRVU

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


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37. The diagram shows a hydrometer floating upright in water. What will happen to the length ofthe portion of the hydrometer that is above the surface of the water, x, if the water is replacedby cooking oil?

A increases

B decreasesC remains unchanged

38. The diagram shows a Bunsen burner. Which of the following statements is correct?


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

A B

C D


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40. Diagram and diagram show two identical egg sinks in liquid A and liquid B respectively.

Which comparison is correct about the density ?

A Density of egg > Density of liquid A > Density of liquid B

B Density of egg > Density of liquid B > Density of liquid A

C Density of liquid B > Density of egg > Density of liquid A

D Density of liquid B > Density of liquid A > Density of egg


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SECTION B

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

1. The diagram shows a simple hydraulic jack with a small piston S and a large piston L with

cross-sectional area of 5 cm2

and 50 cm2

respectively. A force of magnitude 20 N is applied to

the piston S.

(a) Calculate

(i) the pressure that is transmitted by the hydraulic fluid. [2]

(ii) State the pressure in fluid at point X [1]

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


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(iv) the multiplying factor or ratio between the force on piston L with the force on piston S.

(b) Name the principle used in solving part (a) above. [1]

(c) State one characteristic of the pressure in liquid from the principle stated in part (b)

above. [1]

(d) Name one application based on principle stated in part (b) above. [1]

Questions end


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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

ujian selaras f4 2009

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