Question

How to find the speed of Electromagnetic Waves?

Answer 1

speed of a wave can be calculated form the following relation

v = νλ,

where, v = velocity of the wave

ν = Frequency of the wave

λ = wavelength of the wave.

Hertz experimentally found that, the speed of electromagnetic waves of different wavelengths and thus different frequencies, possess same velocity 3 x 10⁸ m/s, which is the speed of light. Thus, speed of electromagnetic waves do no depend upon the wavelength or frequency of the wave.