Physics - Heat & Thermo Question with Solution | TestHub

A→B isobaric: horizontal segment. B→ C: $T$ falls at... C→A adiabatic with positive slope in P-T $\left(P\propto T^{\gamma /(\gamma -1)}\right)$. Only diagram (C) has the isobaric segment on top, the adiabatic curve through C and A, and the correct orientation.