Question

What will be the average value of energy along one degree of freedom for an ideal gas in thermal equilibrium at a temperature T ? (k_B is  Boltzmann constant)

(1)\(\frac 12\)k_BT 

(2) \(\frac 23\)k_BT

(3) \(\frac 32\)k_BT

(4) k_BT

Answer 1

Correct option is (1) \(\frac 12\)k_BT

Energy associated with each degree of freedom per molecule = \(\frac 12\)k_BT.