Kinetic Theory

JEE Main level, single correct, medium

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Question 1 of 168

The ratio of specific heats γ=Cp/Cv\gamma = C_p/C_v for a rigid diatomic gas molecule is:

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Answer: (B) 7/57/5

For a rigid diatomic gas, degrees of freedom f=5f = 5. Thus γ=1+2f=1+25=75\gamma = 1 + \frac{2}{f} = 1 + \frac{2}{5} = \frac{7}{5}.

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