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In an adiabatic expansion, a gas does 25...

In an adiabatic expansion, a gas does 25J of work while in an adiabatic compression 100J of work is dione on a gas. The chagne of internal energy in the two processes respectively are

A

25J and -100J

B

`-25J and 100J`

C

`-25J and -100J`

D

25J and 100J

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The correct Answer is:
B
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