Question

In vacuum the speed of electromagnetic wave depends upon

Answer 1

As vacuum is empty and thus, all the light waves move at a same speed, the number of waves crests passing by a given point in one second depends upon the wavelength.

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Answer 2

THE SPEED OF ELECTROMAGNETIC WAVES REMAINS UNCHANGED IN A VACUUM.

We know that in a vacuum, the speed of an electromagnetic wave is determined by

Speed of light = frequency x wavelength.

c= ν x λ

c = 1/ μ₀ε₀ = CONSTANT

• Electromagnetic waves are waves that can travel across space's vacuum. The oscillation of an electric charge produces electromagnetic waves. This vibration generates a wave that is both electric and magnetic in nature.