PhysicsNEET 2022Displacement current and Maxwell's equations (qualitative)

Electromagnetic Waves

When light propagates through a material medium of relative permittivity $ε_{r}$ and relative permeability $μ_{r}$ , the velocity of light $v$ is given by ( $c$ = velocity of light in vacuum):

A. $v = \frac{c}{ε _{r} μ _{r}}$ ✓
B. $v = c$
C. $v = \frac{μ _{r}}{ε _{r}}$
D. $v = \frac{ε _{r}}{μ _{r}}$

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

Electromagnetic Waves

More from this chapter in past papers