As, AB is isothermal process, so work done by isothermal process is given by WAB=nRTln(V1V2)WAB=nRTln(V12V1)=nRTln2 As, BC is isobaric process, so work done by isobaric process is given by WBC=pΔV=p2(V1−V2)=p2(2V2−V2)=−2p2V2=2−nRT As, CA is isochoric process, so work done by isochoric process is given by, WCA=0[∵ΔV=0] Total work done in the cycle ABCA, WABCA=WAB+WBC+WCA=nRTln2+(2−nRT)+0=nRT(ln2−21)
