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Work done by friction on a body moving o...

Work done by friction on a body moving on plain ground ……………

A

positive

B

Negative

C

0

D

none of these

Text Solution

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The correct Answer is:
B
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Work done by gravitational force on a freely falling body ………….

VGS PUBLICATION-BRILLIANT-WORK AND ENERGY-CONCEPTUAL UNDERSTANDING - OBJECTIVE TYPE QUESTIONS
  1. If work has positive value, the body on which the work has been done w...

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  2. If work has negative value, the body on which the work has been done ...

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  3. The capacity of doing work by an object depends on ………… and ………….. of ...

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  4. When work is done, energy will be …………… from one object to other.

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  5. The biggest natural and primary source of energy for us is the ……….

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  6. The energy possessed by an object due to its motion is called …………. en...

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  7. The numerical expression for kinetic energy is K.E. = ……………………

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  8. P.E. = ………………..

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  9. In an iron box ……………… energy converts into ……………energy.

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  10. Power = ………………….

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  11. The unit of power is ………….

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  12. kinetic energy of an object increases with its ………………..

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  13. If the displacement of the object is in the direction opposite to the ...

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  14. Work (W) = …………………..

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  15. The capacity to do work is called ………………

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  16. Mechanical energy = ……………..

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  17. 1 Watt = ………………

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  18. Work done by gravitational force on a freely falling body ………….

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  19. Work done by friction on a body moving on plain ground ……………

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  20. Work done by a porter standing with luggage on his head is ……….

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