Q. The relaxation time in conductors
A) Increases with the increase of temperature
B) Decreases with the increase of temperature
C) It does not depend on temperature
D) All of sudden changes at $400\ K$
Explanation
(b) Because as temperature increases, the resistivity increases and hence the relaxation time decreases for conductors $\left( \tau \propto \frac{1}{\rho} \right)$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.