Question

The specific heat at constant pressure and at constant volume for an ideal gas are $C_p$ and $C_v$ and its adiabatic and isothermal elasticities are $E_{phi}$ and $E_{\theta }$ respectively. The ratio of $E_{\varphi }$ to $E_{\theta }$ is

• A.
• B.
• C.
• D.

Answer 1

The correct option is B

Ratio of adiabatic and isothermal elasticities
$\frac{E_{\varphi }}{E_{\theta }}=\frac{\gamma P}{P}=\gamma =\frac{C_p}{C_v}$