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A gas does 4.5 J of external work during...

A gas does 4.5 J of external work during adiabatic expansion. If its temperature falls by 2 K, then its internal energy will be

A

Increased by 4.5 J

B

Decreased by 4.5 J

C

Decreased by 2.25 J

D

Increased by 9.0 J

Text Solution

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The correct Answer is:
B
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