Question

The speed of an electromagnetic wave in a material medium of permeability $\mu$ and permittivity $\epsilon$ is

• A. $\frac{1}{\mu \epsilon }$
• B. $\frac{1}{2\mu \epsilon }$
• C. $\frac{1}{\sqrt{\mu \epsilon }}$
• D. $\frac{1}{\sqrt{2\mu \epsilon }}$ -

Answer 1

Answer: (C)

The speed of an electromagnetic wave in a medium,
$v=\frac{1}{\sqrt{\mu \epsilon }}$
where $\mu$ and $\epsilon$ be permeability and permittivity of the medium respectively.