On which of the following factors does the average kinetic energy of gas molecules depends ? (i) Nature of the gas, (ii) absolute temperature, (iii) volume, what will be its value at the absolute zero ?

Explanation

the average kinetic energy of gas molecules
(i) is independent of the nature of gas
(ii) depends upon the temeperature of the gas as
`1/2mC^(2) =3/2 k_(B) T i.e., 1/2 mC^(2) prop T` ltbtgt (iii) id independent of the volume of the gas.
At absoulte zer, rms velocity of the gas molecules becomes zero. So mean K.E. per molecules of the gas becomes zero at absolute zero.