Question

The value equal to the velocity of light in vacuum is

• A. $\frac{\sqrt{{\mu }_0}}{{\epsilon }_0}$
• B. $\frac{1}{\sqrt{{\mu }_0{\epsilon }_0}}$
• C. $\sqrt{{\mu }_0{\epsilon }_0}$
• D. $\sqrt{\frac{{\mu }_0}{{\epsilon }_0}}$

Answer 1

Answer: (B)

The velocity of light in vacuum is given by
$c=\frac{1}{\sqrt{{\mu }_0{\epsilon }_0}}$
where ${\mu }_0$ and ${\epsilon }_0$ are respectively the absolute permeability and absolute permittivity of free space.