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COMEDK2023PhysicsKinetic Theory of Gases

The mean energy per molecule for a diatomic gas is

Options

  1. A5 k_B T N
  2. B5 k_B T 2 N
  3. C5 k_B T 2
  4. D3 k_B T 2

Correct answer

C. 5 k_B T 2

Step-by-step solution

For an ideal gas, mean kinetic energy per molecule = f 2 k_B T For diatomic gas, degree of freedom, f=5 K.E per molecule = 5 k_B T 2

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