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  4. The ratio of average translatory kinetic energy of He gas molecules to O 2 gas molecules is

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Q. The ratio of average translatory kinetic energy of $He$ gas molecules to $O _{2}$ gas molecules is

Kinetic Theory

Solution:

Both $He$ and $O _{2}$ have $3$ translatory degrees of freedom. At the same temperature, energy is divided equally in all degrees of freedom. Hence ratio of the translatory kinetic energy is one.