4EMYE_P1_2011PHYCHEM

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Candidate’s name: ( ) Class:

EVERGREEN SECONDARY SCHOOL Mid Year Examination 2011

Science (Physics/ Chemistry) 5116 Paper 1

Secondary 4 Express / 5 Normal (Academic)

Date: 20 May 2011 Duration: 1 hour Marks: 40 READ THESE INSTRUCTIONS FIRST Write in soft pencil. Write your name, class and class register number in the spaces provided above and on the OTAS Sheet There are forty questions on this paper. Answer all questions. For each question there are four possible answers A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate OTAS Sheet The periodic table is attached to the last page.

Evergreen Secondary School Secondary 4 Express/ 5 Normal Mid-Year Examination Science (Physics/Chemistry)

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1 Two forces 4 N and 6 N, acts on a body to give a resultant force F. Which one of the following statements is true about F?

A F can be less than 2 N. B F can be greater than 10 N. C F can be 5 N D F can only be in one direction. 2 A body resists changes to its motion. Which property of the body is

responsible for this resistance?

A Density B Friction C Inertia D Kinetic Energy 3 When a person exerts a horizontal force of 20 N on an object resting on a

level ground, the object accelerates at 3 ms-2. Mass of the object is known to be 5 kg. Find the frictional force acting on the object as it is moving on the ground.

A 5 N B 15 N C 20 N D 35 N 4 Four wooden blocks are placed on a plank. The end P of the plank is

then slowly raised. If the blocks do not slip on the plank, which block would be the first to topple over?

A

B C

D

P


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5 A 1 m long uniform beam is supported at the 50 cm mark. Given that a 5 N weight acting at the 10 cm mark is balanced by a force F and a 3 N force acting downwards at 60 cm mark and 80 cm mark respectively as shown in the diagram below, calculate the force F.

A 2 N B 3 N C 7 N D 11 N 6 Two weights X and Y are hung on the two ends of a light half-meter rule.

The weight of X is twice that of Y. How far from X should the rule be pivoted in order to balance the rule?

A 16.7 cm B 33.3 cm C 25.0 cm D 66.7 cm 7 The diagram shows a side view of a light negatively charged particle

being released into the gap between metal plates connected to a supply with a high potential difference. The electric field between the plates is shown.

X Y

0 cm 50 cm

10 60 80

50

5 N F 3 N


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Which could be the path of the falling particle?

A Into the plane of the page. B Out of the plane of the page. C Towards the left. D Towards the right. 8 Which of the following statements about an electrical insulator is correct?

A It contains electrons but they are not free to move. B It contains only neutrons. C It contains some electrons but more protons. D It contains some protons but more electrons. 9 X and Y are two light metal balls suspended using nylon thread. When a

positively charged rod is placed between these balls, X is attracted to the charged rod but Y is repelled away from the rod as shown in the diagram below.

What are the charges present on X and Y?

Charge on X Charge on Y A negative positive B negative or neutral positive or neutral C negative or neutral positive D negative or neutral positive or neutral 10 A student makes a resistor from a certain length of wire. She makes

another resistor using the wire of the same material but this time it has half the length and twice the diameter. The ratio of the resistance of this second resistor to the first is

A 1:1 B 1:4 C 1:8 D 2:1

X

+ + + + +

Y


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11 The diagram shows a circuit. What is the reading on voltmeter V2?

A 3 V B 4.5 V C 6 V D 9 V 12 The e.m.f. of a cell is quoted as 1.5 V. This means that the cell can

supply A 1.5 amperes of power per coulomb of charge it delivers. B 1.5 coulombs of charge per second. C 1.5 joules of energy per coulomb of charge it delivers. D 1.5 joules of energy per second. 13 A student uses an ammeter and a voltmeter to find the resistance of a

light bulb. He incorrectly connects the ammeter and the voltmeter as shown.

What will be the most probable outcome?

A The voltmeter will burn out. B The ammeter will indicate practically zero current. C The voltmeter will indicate practical zero voltage D The lamp will burn out.

V

A

6 V

V1 V2

9 V

12 Ω 6 Ω


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14 In the circuit shown below, the ammeter reads 1.00 A when S1 is closed. What would the ammeter reading be if both S1 and S2 are closed?

A 0.3 A B 0.8 A C 1.33 A D 1.67 A 15 The diagram shows three identical lamps connected to a cell when the

switch is open. When the switch is closed, which of these statements best describes lamps P and Q?

A Both P and Q become brighter than before. B Both P and Q become dimmer than before. C P is dimmer but Q is brighter than before. D P is brighter but Q is dimmer than before. 16 Two identical light bulbs of rating “220 V, 60 W” are connected in series

to the 220 V mains. The total power dissipated is :

A 30 W B 60 W C 120 W D 240 W

A

12 V

6 Ω

6 Ω S2

S1

P

Q

R


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17 An electrical appliance has a rating of 200 W, 50 V. Which of the following is the most suitable fuse for the appliance?

A 1 A B 3 A C 5 A D 13 A 18 If a heater draws 5 A current from a 240 V supply, what is the current in

the neutral wire?

A 0 A B 5 A C 10 A D 240 A 19 A metal bar is confirmed to be a magnet when it

A attracts all metal. B attracts another magnet. C attracts a piece of iron. D repels a compass needle.

20 The diagram shows a beam of electrons entering a magnetic field. What is the effect of the magnetic field on the electrons?

A They are deflected into the plane of the diagram. B They are deflected out of the plane of the diagram. C They are deflected towards the bottom of the diagram. D They are deflected towards the top of the diagram.

Beam of electrons

Magnetic field

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4EMYE_P1_2011PHYCHEM