A particular amount of an ideal gas participates in a reversible process as given in the figure. What type of process is this ? Explain the changes in each step.

Explanation

This process is a cyclic process because the system returns to its initial state after undergoing consecutive processes AB, BC and CA.
In step AB, the gas expands reversible at constant pressure. Hence, the step AB indicates an isobaric change. in step BC, the temperature of the gas decreases at constant volume. thus BC indicates as isochoric change. in step CA, the gas is compressed reversible at constant temperature. thus CA indicates a reversible isothermal change.