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The potential energy of a system increas...

The potential energy of a system increase,if work is done

A

by the system against a conservative force

B

by the system against a non-conservative force

C

upon the system by a conservative force

D

upon the system by a non - conservative force

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The correct Answer is:
A
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The potential energy of a system increased if work is done

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(a) Two protons are brought towards each other. Will the potential energy of the system decrease or increase ? If a proton and an electron be bought nearer, then ?

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