In the process shown in figure, the internal energy of an ideal gas decreases by 3P0V02 in going from point C to A. Heat transfer along the process CA is
−5P0V02
Process C→A : –
ΔQ=ΔU+ΔW
ΔU=−3P0V02
Δ W=area under curve
=P0(V0−2V0)
=−P0V0
∴ΔQ=−3P0V02−P0V0
=−5P0V02