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JEE Main202117 Mar 2021Morning ShiftPhysicsKinetic Theory of GasesActual

A polyatomic ideal gas has 24 vibrational modes. What is the value of γ ?

Options

  1. A1 . 03
  2. B1 . 30
  3. C1 . 37
  4. D10 . 3

Correct answer

A. 1 . 03

Step-by-step solution

Since each vibrational mode has 2 degrees of freedom hence total vibrational degrees of freedom = 48 f = 3 + 3 + 48 = 54 γ = 1 + 2 f = 28 27 = 1 . 03

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