Q. According to Maxwell’s equation the velocity of light in any medium is expressed as
A) $\frac{1}{\sqrt{\mu_{0}\varepsilon_{0}}}$
B) $\frac{1}{\sqrt{\mu\varepsilon}}$
C) $\sqrt{\mu/\varepsilon}$
D) $\sqrt{\frac{\mu_{0}}{\varepsilon}}$
Explanation
(b) Velocity of light in a medium,
$c = \frac{1}{\sqrt{\mu_{0}\varepsilon_{0}\mu_{r}\varepsilon_{r}}} = \frac{1}{\sqrt{\mu\varepsilon}}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.