A polyatomic gas with $n$ degrees of freedom has a mean energy per molecule given by

($N$ is Avogadro's number)

  • A$\frac{{nkT}}{N}$
  • B$\frac{{nkT}}{{2N}}$
  • C$\frac{{nkT}}{2}$
  • D$\frac{{3kT}}{2}$
AIPMT 1989, Easy
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