Physics - Heat & Thermo Question with Solution | TestHub

Along AB, T and P increase in the same ratio, so V is constant.
$W_{\mathrm{on},AB}=0$
Along BC, T is fixed at 2T₀ and pressure doubles, so the gas is compressed.
$W_{\mathrm{on},BC}=nRT\ln (P_C/P_B)=2R{T}_0\ln (4P_0/2P_0)$
$W_{\mathrm{on},ABC}=2R{T}_0\ln 2$
Answer B.