AIIMS 2019 Physics Adiabatic Processes Assertion Reason Question

The assertion is true because the relationship $P \propto V^{-\gamma}$ (where $\gamma$ is the heat capacity ratio) for an adiabatic process does not yield a straight line on a $P$ vs. $1/V$ graph, as the equation describes a hyperbolic relationship instead. The reason is also true, as it correctly identifies that $PV^{\gamma} = \text{constant}$ characterizes adiabatic processes, reinforcing the assertion about the non-linear nature of the graph. Other options are incorrect because they either misstate the truth of the assertion or the reason, failing to recognize that both are accurate and directly related.