• # question_answer If Y be the ratio of specific heats of a perfect gas, the number of degree of freedom of a molecule of the gas is: A)  $(Y-1)$                     B)  $\frac{3Y-1}{2Y-1}$C)  $\frac{2}{Y-1}$       D)  $\frac{9}{2}\,(Y-1)$

As,  $Y=1+\frac{2}{F}$  or  $F=\frac{2}{Y-1}$  (Hence f is the degree of freedom)