One mole of an ideal monatomic gas undergoes a process described by the equation PV3 = constant. The heat capacity of the gas during this process is :

\(\frac{3}{2}R\) \(\frac{5}{2}R\) \(2R\) \(R\)

\(R\)

PV3 = constant ; ⇒ n = 3 C = Cv + \(\frac{R}{1 - n}\)    = \(\frac{R}{r - 1}\) + \(\frac{R}{1 - n}\) r = 5/3  ⇒ C = R