Q.
A given mass of gas expands from state $A$ to state $B$ by three paths $1$, $2$, and $3$ as shown in the figure :
If $w_1$, $w_2$ and $w_3$ respectively, be the work done by the gas along three paths, then
Thermodynamics
Solution:
Work is equal to area under $P -V$ graph (when $P$ is plotted along $y$-axis). As area under graph $3$ is maximum and area under graph $1$ is minimum, so $w_3$ is maximum and $w_1$ is minimum.
$\therefore w_1 < w_2 < w_3$
