Q. If $\mu_{0}$ be the relative permeability and $K_{0}$ the dielectric constant of a medium, its refractive index is given by
A) $\frac{1}{\sqrt{\mu_{0}K_{0}}}$
B) $\frac{1}{\mu_{0}K_{0}}$
C) $\sqrt{\mu_{0}K_{0}}$
D) $\mu_{0}K_{0}$
Explanation
(c) $\mu = \sqrt{\frac{\mu\varepsilon}{\mu_{0}\varepsilon_{0}}} = \sqrt{\mu_{r}K}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.