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The potential energy of a system increas...

The potential energy of a system increased if work is done

A

upon the system by a non conservative force

B

by the system against a conservative force

C

by the system against a non conservative force

D

upon the system by a conservative force

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The correct Answer is:
B
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NCERT FINGERTIPS ENGLISH-WORK , ENERGY AND POWER-Assertion And Reason
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  6. Assertion : For two bodies , the sum of the mutual forces exerted betw...

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  7. Assertion: Work done by the force of friction in moving a body around ...

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  13. Assertion: Energy associated with a mere kilogram of matter is 9 xx 10...

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  14. Assertion : Kilowatt hour is the unit of power. Reason: One kilowa...

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