39 If the P V diagrams of two thermodynamics devices working

Last updated: 6/11/2023

39 If the P V diagrams of two thermodynamics devices working in a cyclic process are as shown in the figure then 0 V A 1 A is a heat engine B is a heat pump refrigerator 2 B is a heat engine A is a heat pump refrigerator 3 both A and B are heat engines 4 both A and B are heat pumps refrigerator