Physics - Heat & Thermo Question with Solution | TestHub

Three samples $A$, $B$, $C$ of the same gas ($\gamma =\frac{4}{3}$) have equal initial volume. The volume of each is tripled: adiabatically for $A$, isobarically for $B$, isothermally for $C$. The final pressures are equal. Find $\frac{P_A}{P_B}$ initially (two decimals).