Q.
If an electromagnetic wave is propagation in a medium with permittivity $\varepsilon$ and permittivity $\mu$, then $\sqrt{\frac{\mu}{\varepsilon}}$ is the
A) Intrinsic impedance of the medium
B) Square of the refractive index of the medium
C) Refractive index of the medium
D) Energy density of the medium
Explanation
(a) $\sqrt{\frac{\mu}{\varepsilon}} =$ has the dimensions of resistance, hence it is called the intrinsic impedance of the medium
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.