Question

Velocity of electromagnetic waves in vacuum is given by

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

Answer 1

Answer: (D)

The velocity of electromagnetic waves in free space is given by
$c=\frac{1}{\sqrt{{\mu }_0{\epsilon }_0}}=3\times 10^{8}m{s}^{-1}$