Q.
Which of the following is an equivalent cyclic process corresponding to the thermodynamic cyclic given in the figure ?
where, $1 \to 2$ is adiabatic.
(Graphs are schematic and are not to scale)
Solution:
In process 2 to 3 pressure is constant & in process 3 to 1 volume is constant which is correct only in option 4.
Correct graph is

