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Question
A gas does 4.5 J of external work during adiabatic expansion. Its temperature falls by 2 K. Its internal energy will
A gas does 4.5 J of external work during adiabatic expansion. Its temperature falls by 2 K. Its internal energy will
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Solution
The correct option is B decrease by 4.5 J
dQ = dU + dW. In an adiabatic change dQ = 0.
Hence, dU = - dW = -4.5 J.
decrease by 4.5 J
dQ = dU + dW. In an adiabatic change dQ = 0.
Hence, dU = - dW = -4.5 J.
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