Work, Energy, Power

Level: STD 11 / NEET / JEE

Concept Video

MCQ Test

Sure, I can help with creating multiple-choice questions (MCQs) related to problems in work, power, and energy. Here you go:

1. When a force of 10N is applied to move a box a distance of 5m, how much work is done?
   A. 50 Joules
   B. 2 Joules
   C. 10 Joules
   D. 100 Joules
2. What is the unit of power in the SI system?
   A. Joule
   B. Watt
   C. Newton
   D. Meter
3. Kinetic energy is the energy possessed by an object due to its…
   A. position
   B. motion
   C. temperature
   D. shape
4. If a 5kg box is lifted to a height of 2m, what is the potential energy? (Assume g = 10 m/s²)
   A. 10 Joules
   B. 50 Joules
   C. 100 Joules
   D. 200 Joules
5. A force of 5N is applied to move a box a distance of 10m. If the box moves in 2 seconds, what is the power?
   A. 10 Watts
   B. 25 Watts
   C. 50 Watts
   D. 100 Watts
6. Work done is zero when…
   A. force is zero
   B. displacement is zero
   C. both force and displacement are zero
   D. neither force nor displacement are zero
7. The work done on an object is equal to the change in its…
   A. mass
   B. volume
   C. kinetic energy
   D. potential energy
8. What happens to the kinetic energy of an object if its speed is tripled?
   A. It remains the same
   B. It is halved
   C. It is tripled
   D. It is increased nine times
9. Which form of energy is associated with the motion of an object?
   A. Potential Energy
   B. Kinetic Energy
   C. Chemical Energy
   D. Elastic Energy
10. Energy can be…
    A. created but not destroyed
    B. destroyed but not created
    C. created and destroyed
    D. neither created nor destroyed
11. Which of the following is an example of potential energy?
    A. A moving car
    B. A stretched spring
    C. A falling stone
    D. Running water
12. If a force of 20 N is used to push a lawn mover 10 meters, how much work is done?
    A. 30 Joules
    B. 200 Joules
    C. 2 Joules
    D. 2000 Joules
13. Power is defined as…
    A. force x distance
    B. force x time
    C. work done x time
    D. work done / time
14. What is the work done on an object when a force moves the object in the direction perpendicular to the direction of the force?
    A. Zero
    B. Maximum
    C. Minimum
    D. Cannot be determined
15. What is the kinetic energy of a 2kg object moving at 3m/s?
    A. 3 Joules
    B. 6 Joules
    C. 9 Joules
    D. 18 Joules
16. Energy stored in a stretched rubber band is an example of…
    A. Gravitational Potential Energy
    B. Elastic Potential Energy
    C. Kinetic Energy
    D. Thermal Energy
17. If a 2kg object is moving with a speed of 4m/s, what is its kinetic energy?
    A. 4 Joules
    B. 8 Joules
    C. 16 Joules
    D. 32 Joules
18. In an isolated system, the total energy before the interaction is equal to the total energy after the interaction. This statement is known as…
    A. The Law of Conservation of Mass
    B. The Law of Conservation of Energy
    C. The Law of Conservation of Momentum
    D. The Law of Conservation of Charge
19. If an object is at rest, it possesses…
    A. Only Kinetic Energy
    B. Only Potential Energy
    C. Both Kinetic and Potential Energy
    D. No Energy
20. The work done against gravity in lifting a box from the ground floor to the first floor of a building is an example of…
    A. Kinetic Energy
    B. Gravitational Potential Energy
    C. Elastic Potential Energy
    D. Chemical Energy

Key

Answers to MCQ

Here are the correct answers for the provided multiple-choice questions:

1. A
2. B
3. B
4. C
5. C
6. C
7. C
8. D
9. B
10. D
11. B
12. B
13. D
14. A
15. D
16. B
17. C
18. B
19. B
20. B