What is the value of Cv for a diatomic gas when vibrational mode is included? - KINETIC THEORY OF GASES Quiz | GKFix.in

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Question

What is the value of Cv for a diatomic gas when vibrational mode is included?

A. (5/2)R
B. (9/2)R
C. (3/2)R
D. (7/2)R