Question

The ratio of a specific heats of a gas is 9/7, then the number of degrees of freedom of the gas molecules for translation motion is:

Answer 1

The ratio of a specific heats of a gas is 9/7, then the number of degrees of freedom of the gas molecules for translation motion is 3.We will use the standard formula $\frac{(f+2)}{f}=\gamma$.On cross multi plication and solving we get $f=7$,but total translational will be 3 only.