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Question

Physics Question on Reflection Of Light By Spherical Mirrors

When light propagates through a material medium of relative permittivity єr, and relative permeability єr, the velocity of light, v is given by (c - velocity of light in vacuum)

A

v=cv=c

B

v=µr∈rv = \sqrt\frac{µ_r}{∈_r}

C

v=∈rµrv = \sqrt\frac{∈_r}{µ_r}

D

v=c∈rµrv = \frac{c}{\sqrt{∈_rµ_r}}

Answer

v=c∈rµrv = \frac{c}{\sqrt{∈_rµ_r}}

Explanation

Solution

The correct option is D: v=c∈rµrv = \frac{c}{\sqrt{∈_rµ_r}}