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A body is said to be doing a negative wo...

A body is said to be doing a negative work if :

A

it does work in the direciton of force

B

work is done against a force

C

work is done by a force

D

it does no work

Text Solution

Verified by Experts

The correct Answer is:
B
Whenever work is done against a force, the displacement will be in opposite direction. Hence work has a negative nature.
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PREMIERS PUBLISHERS-WORK, ENERGY AND POWER -MULTIPLE CHOICE QUESTIONS (OTHER IMPORTANT QUESTIONS & ANSWERS)
  1. Which one of the following statements is incorrect?

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  2. When a body does some work, we can say that work done by the body is

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  3. A body is said to be doing a negative work if :

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  4. Consider the following two statements. (A) Linear momentum of a syst...

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  5. From the following statements select the incorrect statements.

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  6. If a stone is released from a tower, then its total energy during its ...

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  7. Two springs have their force constants k(1) and k(2) (k(2) gt k(1)) . ...

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  8. Which of the following statements is wrong?

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  9. A rock of mass m dropped to the ground from a height h. A second rock ...

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  10. The potential energy of a system increases, if work is done

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  11. A bullet is fired from a rifle which recoils after firing. The ratio o...

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  12. In the following question a statement of assertion is followed by a st...

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  13. If the force acting on a body is inversely proportional to its speed, ...

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  14. A particle is dropped from a height h. A constant horizontal velocity ...

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  15. Select the odd man out from the following equations related to values ...

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  16. If a body is raised from the surface of the earth upto height R, what ...

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  17. In the following question select the correct statement. The law of c...

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  18. Principle of conservation of linear momentum:

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  19. Two balls at the same temperature collide. What is conserved?

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  20. Two bodies of masses 3m and 9m are moving with equal kinetic energies....

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