FORM TWO PRE- MOCK EXAMINATIONS

PHYSCIS

GOLDEN SECONDARY SCHOOL – EXTERNAL EXAMINATION

TIME: 2:30HRS

1. This paper consists of section A, B and C.
2. Answer all questions in each section in the space provided.
3. Write your Examination Number at the top right corner of every page.
4. Where necessary the following constant may be used:
1. Acceleration due to gravity, g =
2. Density of water = 1g or 1000kg

SECTION A (20 Marks)

1. For each of the items (i)-(xx) choose the correct answer among the given alternatives and write its letter in the table provided.

1. The most accurate instrument in measuring length among the following is

A. Micrometer screw gauge

B. Vernier caliper

C. Tape measure

D. Metre rule

2. Which one among the following is a safety measure in a physics laboratory

A. Never use bare hand to handle hot objects

B. Do not touch any electrical equipment with wet hand

C. Clean the working area before leaving the laboratory

D. Laboratory floor should not be polished

3. The energy generated by the flow of heat from the Earth’s surface

A. Solar energy

B. Sea-wave energy

C. Geothermal energy

D. Tidal energy

4. The liquid in glass thermometer used to measure human body temperature is called

A. Clinical thermometer

B. Thermistor thermometer

C. Liquid in glass thermometer

D. Thermocouple thermometer

5. Gives the relationship between mass, force and acceleration.

A. Newton’s first law

B. Newton’s second law

C. Newton’s third law

D. The law of inertia

6. The following are examples of first class lever except

A. Crowbar

B. Scissor

C. Shovel

D. Pliers

7. On a velocity-time graph, motion at a constant velocity is represented by

A. Vertical line

B. Horizontal line

C. Inclined plane

D. Slope

8. A ball is dropped from rest. What is its speed after 3 seconds?

A. 15m/s

B. 25m/s

C. 30m/s

D.45m/s

9. Which of the following statements describes particles in solid?

A. Close together and stationary

B. Close together and vibrating

C. Close together and moving around at random

D. Far apart and stationary

10. The ability of the body to float is called

A. Flotation

B. Law of flotation

C. Archimedes’ principle

D. Buoyancy

11. Hydrometer sinks to different level in a liquid depending on

A. Mass

B. Volume

C. Relative density

D. Weight

12. The equilibrium of the body depends on three factors, which one is not a factor

A. Magnitude of force

B. Shape of the body

C. Direction of force

D. Point of application of force

13. The SI-unit of capacitance is called

B. Joule second

C. Volt

D. Coulomb

14. The image formed by a plane mirror is

A. Real and same size as object

B. Real and nearly same size as object

C. Virtual and same size as object

D. Virtual and nearly the same size as object

15. Which of the following instrument is used to measure an electric current?

A. Voltmeter

B. Electrometer

C. Ohm-meter

D. Ammeter

16. A temporary magnet should be made from

A. Copper

B. Steel

C. Aluminium

D. Iron

17. Which system gives the greatest acceleration

A. 65N acting on 40kg

B. 10N acting on 8kg

C. 18N acting on 30kg

D. 80N acting on 100kg

18. Which of the following statements is correctly describe what happens when two bodies collides
1. Momentum may or may not be conserved depending on the type

of collision

2. Kinetic energy may or may not be conserved depending on the

typeofcollision

C. There is always some loss of total momentum

D. There is always some loss of kinetic energy

19. Which phenomenon is taking place when kerosene rises up a wick

A. Surface tension

B. Elasticity

C. Capillarity

D. Meniscus

20. If the angle between two plane mirrors is 300, then the number of images formed will be

A.12

B.11

C. 5

D.2

SECTION B (40 Marks)

1. Match each item in LIST A with a correct response in LIST B by writing a letter of a correct response

below the number of the corresponding item in LIST A in the table provided.

 LIST A LIST B Undergo plastic deformation Reduces the surface tension of the liquid The principle that paper and fabri towels work to absorbs water Used in sprays Enable insects to walk on water Capillarity Surface tension Osmosis Adhesion Surfactant Diffusion Hooks law Inelastic material

 LIST A (i) (ii) (iii) (iv) (v) LIST B

1. Complete each of the following statements by writing the correct answer in the space provided:
1. The chemicals and substances that can catch fire easily are called………………………………..

…………………………………………………………………………………………………

2. A continuous tube that allow liquid to drain water from a reservoir through an intermediate point that is higher than reservoir is termed as ………………………………………………..

…………………………………………………………………………………………………

3. An object that emit light as a result of being heated is called…………………………………

…………………………………………………………………………………………………

4. The type of equilibrium in which a body returns to its original position when slightly displaced is known as………………………………………………………………………….
5. Weight of a body is defined as…………………………………………………………………….

…………………………………………………………………………………………………

2. (a) Define the following terms
1. Moment of force……………………………………………………………………….

…………………………………………………………………………………………

2. The centre of mass……………………………………………………………………..

…………………………………………………………………………………………

(b) Mention two conditions for a body to be in equilibrium

(i) …………………………………………………………………………………………….

…………………………………………………………………………………………….

1. ……………………………………………………………………………………………………………………………………………………………………………………

(c) (i) State the principle of moment…………………………………………………………

…………………………………………………………………………………………

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

1. A uniform meter rule is balanced at 30cm mark when a load of 80g is hung at the zero mark. Calculate the mass of the rule.

1. (a) Define magnetic field………………………………………………………………………….

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

(b) (i) Differentiate between the angle of declination and the angle of dip…………………

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

1. State the law of polarity………………………………………………………………..

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

1. Mention any two applications of the earth’s magnetic field.

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

(c) Draw a diagram of the magnetic field when two like poles (N-poles) are brought

close to each other and show the Neutral Point.

2. (a) Define the following terms:
1. Apparent weight ………………………………………………………………………

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

2. Sinking…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

(b) Why ships float although are made from iron and steel which are material

denser than water?

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

(c) An object is hung from a spring balance. It weighs 40N in air and 30N when

Immersed in water

1. Determine the weight of water displaced.

1. What is mass of displaced water.

1. What is the volume of displaced water.

SECTION C (40 Marks)

1. (a) Give the meaning of the following terms:
1. Pressure……………………………………………………………………..……………………………………………………………………………………………………
2. Barometer…………………………………………………………………………………………………………………………………………………………………………

(b) Explain why pressure in liquid increase with depth?

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

(c) A rectangular solid block has sides 0.4m0.1m0.2m and density of 8000kg

If it rest on a horizontal flat surface. Calculate

1. Minimum pressure it can exert.
2. Maximum pressure it can exert.

1. (a) Define the following terms:
1. Capacitance of the capacitor……………………………………………………………

…………………………………………………………………………………………

2. Lighting conductor…………………………………………………………………….

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

(b) (i) Mention any two factors affecting the capacitance of a capacitor

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

1. List down any two factors affecting the resistance of the conductor

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

(c) If a potential difference 6.0V is measured across the ends of a wire of resistance

1. What current flow through it?

1. What potential difference is required to make a current of 1.5A flow through it?
1. (a) Define linear momentum………………………………………………………………………….

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

(b) (i) Write down three equation of uniform accelerated motion

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

1. Sketch a velocity-time graph for a body thrown vertically upwards

(c) (i) State Newton’s third law of motion…………………………………………………..

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

1. A mass of 10kg acquires a velocity of 20ms from rest in 4s. What force is required.
1. (a) Give the meaning of the following terms
1. Efficiency…………………………………………………………………..…………..…………………………………………………………………………………………
2. Pitch…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

(b) Draw a pulley system that consist of four pulleys

(c) A single movable pulley has an efficiency of 80%. What load can be raised by an

Effort of 4000N.