During the adiabatic expansion of 2 moles of a gas, the internal energy of the gas is found to decrease by 2 joules, the work done during the process on the gas will be equal to
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a
1 J
b
-1 J
c
2 J
d
-2 J
answer is D.
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Detailed Solution
dQ=0=−2+dW⇒dW=2J⇒ Work done by the gas =2J⇒ Work done on the gas =−2J