Q.

During the adiabatic expansion of 2 moles of a gas, the internal energy was found to have decreased by 100 J. The work done by the gas in this process is

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a

Zero

b

–100 J

c

200 J

d

100 J

answer is D.

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Detailed Solution

For adiabatic process from FLOT ΔW=−ΔU       (∵ΔQ=0)⇒ΔW=−(−100)=+100J
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During the adiabatic expansion of 2 moles of a gas, the internal energy was found to have decreased by 100 J. The work done by the gas in this process is