Q. If $c$ is the speed of Electromagnetic Waves in vacuum, its speed in a medium of dielectric constant $K$ and relative permeability $\mu,\ $is
A) $v = \frac{1}{\sqrt{\mu_{r},K_{\ }}}$
B) $v = c\sqrt{\mu_{r_{c}}K\ }$
C) $v = \frac{c}{\sqrt{\mu_{r},K}}$
D) $v = \frac{K}{\sqrt{\mu_{r},\ c}}$
Explanation
The correct answer is Option C: $v = \frac{c}{\sqrt{\mu_{r},K}}$.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.