MHT CET 2026 Physics question

According to law of equipartition of energy the molar specific heat of a non rigid diatomic gas at constant volume is

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

Answer: (D)

Solution

A non-rigid diatomic molecule has 3 translational degrees of freedom, 2 rotational degrees and 1 vibrational mode. Each translational and rotational degree contributes per molecule, while the vibrational mode contributes (kinetic plus potential, i.e. two

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Question ID VK-097539