RE-NEET2024Physics-Thermodynamics

RE-NEET 2024 Physics Equipartition of Energy MCQ Question

Type: MCQ-conceptual-Medium-Class 11

According to the law of equipartition of energy, the number of vibrational modes of a polyatomic gas of constant γ = Cₚ/Cᵥ is (Cₚ where Cᵥ are the specific heat capacities of the gas at constant pressure and constant volume, respectively):

A

4+3γγ1\frac{4 + 3\gamma}{\gamma - 1}

B

3+4γγ1\frac{3 + 4\gamma}{\gamma - 1}

C

43γγ1\frac{4 - 3\gamma}{\gamma - 1}

D

34γγ1\frac{3 - 4\gamma}{\gamma - 1}

Correct Answer

Option C

Detailed Explanation

The number of vibrational modes is determined by the degrees of freedom and the specific heat ratio. The correct expression is derived from the equipartition theorem.

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