The relation $PV^\gamma = \text{constant}$, where $\gamma$ is the ratio of the specific heats of ideal gas, is applicable to
- A. Any adiabatic process
- B. Only reversible adiabatic process
- C. Only irreversible adiabatic process
- D. Only isothermal process
Answer: B. Only reversible adiabatic process
Explanation: The equation $PV^\gamma = C$ is derived assuming the process is both adiabatic and reversible (isentropic) for an ideal gas.