Question

The electromagnetic waves travel with a velocity

• A. equal to velocity of sound.
• B. equal to velocity of light.
• C. less than velocity of light.
• D. None of the above.

Answer 1

The correct option is B equal to velocity of light.

Velocity of electromagnetic waves $=\frac{1}{{\mu }_0{ϵ}_0}=3\times {10}^{8}m/s=$ velocity of light.