Physics(SS 1) 2nd term Mid-term test 25/26

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Welcome to your Physics(SS 1) 2nd term Mid-term test 25/26

SECTION A: OBJECTIVE QUESTIONS (10mks)

1. Charging a body by rubbing is called ______.

2. A positively charged body has ______.

3. Charging by induction involves ______.

4. Coulomb’s law states that electrostatic force is directly proportional to ______.

5. Fluid at rest is studied under ______.

6. Pressure in a liquid increases with ______.

7. Upthrust experienced by a body immersed in fluid equals ______.

8. The principle of floatation is based on ______.

9. Continuous flow is also called ______ flow.

10. Stress is defined as ______.

SECTION B: SUBJECTIVE (4marks)

11. Strain is ______.

12. The SI unit of stress is ______.

13. Young’s modulus is the ratio of ______.

14. Materials that return to original shape after deformation are called ________ materials.

SECTION C: THEORY QUESTIONS (6marks)

1. Define electrostatics and explain three methods of charging a body.

2a. The pressure exerted by a force on a portion of a wall 0.5m² is 100Pa. Calculate the force if it acts perpendicular to the wall.

2b. Find the depth of a river given the pressure as 24,500Pa and the density of water 1000kg/m³.

3. A wire 1.5 m long and cross-sectional area 1.0×10-⁶m² extends by 0.003 m under a force. If Young’s modulus is 2.0×10¹¹Pa , calculate the applied force.

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