Question:
If one mole of the polyatomic gas is having two vibrational modes and $\beta$ is the ratio of molar specific heats for polyatomic gas $\left(\beta=\frac{C_{P}}{C_{V}}\right)$ then the value of $\beta$ is :
Correct Option: , 2
Solution:
(2) $f=4+3+3=10$
assuming non linear
$\beta=\frac{\mathrm{C}_{\mathrm{p}}}{\mathrm{C}_{\mathrm{v}}}=1+\frac{2}{\mathrm{f}}=\frac{12}{10}=1.2$