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Questions  

A mono atomic ideal gas at temperature T is expanded adiabatically to eight times its initial volume. Then final temperature of the gas is 

a
T4
b
T32
c
T8
d
T2

detailed solution

Correct option is A

δ=f+2f=3+23=53Now T2T1=(V1V2)δ−1⇒T2T=(V18V1)53−1=1(23)23=14⇒T2=T4

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