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If T2 and T2 are the respective temperatures of a gas undergoing adiabatic reversible and irreversible expansions from the volume V1 to V2 , which of the following facts holds good:

where  γ is the ratio Cp,m/CV,m of the gas.

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a
T2>T2
b
T2<T2
c
T2=T2
d
V1T1γ=V1T2γ

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detailed solution

Correct option is B

The magnitude of work is larger in reversible expansion, hence, larger will be decrease in temperature, T2<T2

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