An ideal gas undergoes a quasi static, reversible process in which its molar heat capacity C remains constant. If during this process the relation of…

An ideal gas undergoes a quasi static, reversible process in which its molar heat capacity $\displaystyle C$ remains constant. If during this process the relation of pressure $\displaystyle P$ and volume $\displaystyle V$ is given by $\displaystyle P V^n=$ constant, then $\displaystyle n$ is given by (Here $\displaystyle C_P$ and $\displaystyle C_V$ are molar specific heat at constant pressure and constant volume, respectively) :