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Q.
A cyclic process $ABCA$ is shown in $PT$ diagram. When presented on $PV$ , it would
NTA AbhyasNTA Abhyas 2022
Solution:
The ideal gas equation is given by,
$PV=nRT$ ; where $n$ is number of moles and $R$ is gas constant.
From $A$ to $B$ , the pressure is constant and temperature is decreasing, hence volume will also decrease ( $V \propto T$ )
From $B$ to $C$ , the temperature is constant and pressure is decreasing, so the volume will increase as,
$V \propto \frac{1}{P}$
In $C$ to $A$ , the slope is constant, i.e.,
$\frac{P}{T}=\frac{n R}{V}=constant$ ; so the volume will be constant.
From the above analysis the graph will look like,
