2nd term Examination on Physics for SS2 2025/2026

SECTION A: OBJECTIVE (Choose the correct option A–D)

1. The SI unit of temperature is

2. The ratio of load to effort is called

3. Moment of a force is defined as

4. Linear momentum is defined as

5. The principle of moments states that when a body is in equilibrium, the sum of clockwise moments is equal to

6. Evaporation occurs at

7. The instrument used to measure temperature is

8. The change in momentum of a body is equal to its

9. The SI unit of heat energy is

10. The freezing point of water is

11. The ratio of distance moved by effort to distance moved by load is

12. Recoil of a gun is explained using

13. One of these is NOT a formula for finding heat energy

14. Which of the following is NOT a simple machine ?

15. The quantity of heat required to raise temperature depends on

16. Drying of clothes in the sun is due to

17. Which condition increases evaporation rate?

18. The law of conservation of momentum states that

19. Power is the product of

20. One of these options is NOT correct about Absolute zero

SECTION B: Subjective (2marks each) Answer All

1. Impulse is equal to ________ .

2. Evaporation causes __________ effect.

3. Fundamental interval is the difference between _______ and _______.

4. Liquid in glass thermometer use liquid like _________.

5. From linear momentum Fa = -Fb proves the ____ law of motion.

6. Change in velocity per unit time is called ________.

7. Mechanical advantage is also known as _________.

8. The symbol of Efficiency is written as _______ and pronounced as _______.

SECTION C: THEORY QUESTIONS

1a)State the principle of moments. (1b)A 20 N force acts 0.5 m from a pivot. Calculate the moment of the force. (1c)For what value of x will the system in Fig. 1c be in equilibrium

2a)Define Mechanical Advantage. (2b)Define Velocity Ratio. (2c) If a machine lifts a load of 200 N using an effort of 50 N, calculate the mechanical advantage. (2d) A machine has a velocity ratio of 6 and an efficiency of 75%. (i)Calculate the mechanical advantage. (ii) If the effort applied is 50 N, find the load lifted

3a)Define linear momentum. (3b)State the law of conservation of linear momentum. (3c)A body of mass 4 kg moves with velocity 5 m/s. Calculate its momentum. (3d)Two bodies of masses 2 kg and 3 kg move towards each other with velocities 6 m/s and 2 m/s respectively. They collide and stick together(i.e. same velocity). Find their final velocity.

(4a)Define evaporation. (4b)State three factors affecting evaporation. (4c) A 0.5 kg metal block is heated from 30°C to 90°C. The specific heat capacity of the metal is 400 J/kg°C. (i) Calculate the heat energy absorbed. (ii) If this heat was supplied in 2 minutes, calculate the power.