(c)
Joule Thomson coefficient $(\mu)$ is zero at inversion temperature
Mathematically, $\mu = \left( \frac{\partial T}{\partial p} \right)_{H}$
When, $\mu = 0$, the gas neither gets cooled down nor gets heated upon expansion
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.