Check your score,(MCQ) class 8 Chapter 4 Energy

MCQ Quiz on Energy

1. What is the formula for Kinetic Energy (KE)?

mv² mgh ½ mv² mg/v²

2. What is the SI unit of energy?

Joule (J) Newton (N) Watt (W) Pascal (Pa)

3. Potential Energy (PE) is calculated as:

mgh ½ mv² mv m²gh

4. Which of the following affects Kinetic Energy?

Mass only Height only Mass and velocity Area and velocity

5. What happens to Potential Energy as a freely falling object moves downward?

Increases Decreases Remains constant Becomes zero

6. Total energy of a freely falling object remains:

Constant Increasing Decreasing Zero

7. Kinetic Energy depends on:

Mass and square of velocity Mass and acceleration Height and velocity Weight and time

8. Energy can:

Neither be created nor destroyed Be created Be destroyed None of these

9. If velocity is doubled, Kinetic Energy becomes:

Doubled Four times Halved Remains the same

10. What does Potential Energy depend on?

Mass, height, and gravity Mass and area Height and velocity Velocity only