Question

For a medium with permittivity $\epsilon$ and permeability $\mu ,$ the velocity of light is given by

• A. $\sqrt{\mu /\epsilon }$
• B. $\sqrt{\mu \epsilon }$
• C. $1/\sqrt{\epsilon /\mu }$
• D. $\sqrt{\epsilon /\mu }$

Answer 1

Answer: (C)

Velocity of light $c=1/\sqrt{\mu \epsilon }$ ,
where $\mu$ is permeability
and $\epsilon$ is permittivity of the medium.