Question

The speed of light is vacuum is equal to

• A. $\frac{1}{\sqrt{{\mu }_0{\epsilon }_0}}$
• B. ${\mu }_0^2{\epsilon }_0^2$
• C. $\sqrt{{\mu }_0{\epsilon }_0}$
• D. $\frac{1}{\sqrt{{\mu }_0{\epsilon }_0}}$
• E. ${\mu }_0{\epsilon }_0$

Answer 1

Answer: (A)

The speed of light in the vaccum is given by the formula
$C=\frac{1}{\sqrt{{\mu }_0{\epsilon }_0}}$
where, ${\mu }_0=$ permeability of vacuum or air
${\epsilon }_0=$ permittivity of air.