Kinetic Theory - Result Question 38

39. A polyatomic gas with n degrees of freedom has a mean energy per molecule given by [1989]

(a) nkTN

(b) nkT2N

(c) nkT2

(d) 3kT2

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Answer:

Correct Answer: 39. (c)

Solution:

  1. (c) According to law of equipartition of energy, the energy per degree of freedom is 12kT.

For a polyatomic gas with n degrees of freedom, the mean energy per molecule =12nkT



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