Question

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

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

Answer 1

Answer: (C)

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