Workdone during adiabatic expansion is given by (where p_{1} v_{1}, T_{1} = Pressure, volume and temperature for the initial condition of gas, p_{2,} v_{2}, T_{2} = Corresponding values for the final condition of gas, R = Gas constant, and γ = Ratio of specific heats)

A. (p_{1} v_{1} - p_{2} v_{2})/(γ - 1)

B. [m R (T_{1} - T_{2})] /(γ - 1)

C. [m R T_{1}/(γ - 1)][1 - (p_{2} v_{2} /p_{1} v_{1})]