One mole of an ideal gas is enclosed in a cylinder fitted with a frictionless piston and occupies a volume of 1.5 litre at a pressure of 1.2 atm. It is subjected to a process given by equation $\mathrm{T}={\mathrm{\alpha V}}^2$ (adiabatic constant for the gas = 1.5). Choose the wrong statement. Given $\mathrm{R\alpha }=80\mathrm{J}{\mathrm{mol}}^{-1}{\mathrm{lit}}^{-2}$(R = gas constant and $\alpha$ is constant)