A fixed mass ' $m$ ' of a gas is subjected to transformation of states from $K$ to $L$ to $M$ to $N$

Question

A fixed mass ' $m$ ' of a gas is subjected to transformation of states from $K$ to $L$ to $M$ to $N$ and back to $K$ as shown in the figure :
The pair of isochoric processes among the transformation of states is\

Professor PC Thomas Classes · Answer

(b) : In isochoric process, volume is constant.