Work, Power And Energy Test Online MCQs With Answer
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Work, Power and Energy Test Online MCQs

Test Name Work, Power and Energy MCQs Test
Subject Physics
Test Type MCQs
Total Question 20
Total Marks 40
Total Time 20 Mints
Test Help For
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Work, Power and Energy Test is provided in the form of multiple choice questions for the preparation of MCAT test. Work, Power and Energy Test is helpful in objective exam preparation. Check your information and increase your knowledge about Work, Power and Energy by attempting this test below.

Work, Power and Energy Test Online MCQs

Physics

1. A body of mass 3 kg is under a force which causes a displacement in it, given by s = t²/3 (in m). Find the work done by the force in 2 seconds:

Question 1 of 20

2. When a body is moving in a circular orbit, work done will be:

Question 2 of 20

3. If a particle is rotating in a circle, which of the following is true?

Question 3 of 20

4. When a body moves with a constant speed along a circle:

Question 4 of 20

5. Work done by a frictional force is:

Question 5 of 20

6. A uniform chain of mass M and length L is lying on the smooth table with half of its length hanging vertically down the edge of the table. The work done in pulling the hanging part of the chain over the table is:

Question 6 of 20

7. The work done by the centripetal force F when the body completes one rotation around the circle of radius R is:

Question 7 of 20

8. What is F. ds?

Question 8 of 20

9. A body moves a distance of 10 m along a straight line under the action of a 5 N force. If the work done is 25 J, the angle between the force and direction of motion of the body is:

Question 9 of 20

10. The work done in pulling up a block of wood weighing 2 kN for a length of 10 m on a smooth place inclined at an angle of 15° with the horizontal is:

Question 10 of 20

11. A ball of mass M moves with velocity v and strikes with a wall having infinite mass and return with same velocity. Work done by the ball on the wall is:

Question 11 of 20

12. A string of mass m is stretched by a length L. What is the work done where g is the acceleration due to gravity?

Question 12 of 20

13. A mass is hanging on a wire, due to which its length increases by l, the work done is:

Question 13 of 20

14. A horizontal force of 5 N is required to maintain a velocity of 2 m/s for a block of 10 kg mass sliding over a rough surface. The work done by this force in one minute is:

Question 14 of 20

15. A uniform chain of length l and mass M lying on a smooth table and one-third of its length is hanging vertically down over the edge of the table. If g is the acceleration due to gravity, the work required to pull the hanging part on to the table is:

Question 15 of 20

16. Natural length of a spring is 60 cm, and its spring constant is 4000 N/m. A mass of 20 kg is hung from it. The extension produced in the spring is, (Take g = m/s²):

Question 16 of 20

17. A car weighing 500 kg working against a resistance of 500 N, accelerate from rest to 20 ms-1 in100 m. (g = 10ms-2). The work done by the engine of car is:

Question 17 of 20

18. A body moves a distance of 10 m under the action of force F = 10 N. If the work done is 25 J, the angle which the force makes with the direction of motion is:

Question 18 of 20

19. A man lifts 20 kg mass up to 2m. The work done by him is:

Question 19 of 20

20. A mass M is lowered with the help of a string by a distance x at a constant acceleration g/2. The work done by the string will be:

Question 20 of 20


 

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