Question

If $\mu_0$ is permeability of free space and $\epsilon_0$ is permittivity of free space, the speed of light in vacuum is given by

• A. $\sqrt {\mu_0}{\epsilon_0} $
• B. $\sqrt{\frac{\mu_0}{\epsilon_0}} $
• C. $\sqrt{\frac{1}{\mu_0\epsilon_0}} $
• D. $\sqrt{\frac{\epsilon_0}{\mu_0}} $

Answer 1

Answer: (C)

The speed of light in vacuum is given by $\sqrt{\frac{1}{\mu_{0} \varepsilon_{0}}}$.
where $\mu_{0}$ is permeability and $\varepsilon_{0}$ is permittivity of free space.