Question

Speed of electromagnetic wave is same
(a)for all wavelength
(b)in all media
(c)for all frequency
(d)for all intensities

Answer 1

Speed of the Electromagnetic waves is same for all the wavelengths and for all the frequencies.

Therefore, Option (a). as well as options (c). are correct.

We know the wavelength is inversely proportional to the frequency,

∴ λ α 1/ν

⇒  λ = c/ν  [Where c is the constant]

This constant is the speed of the light ,means the speed of the electromagnetic waves which is same for all wavelength and for all frequencies.

If in an electromagnetic spectrum, frequency will increase then wavelength will decrease so to keep there product constant, meas speed of the electromagnetic waves.

Hope it helps.

Answer 2

Option (d) is correct

The velocity of an wave of electromagnetic on every medium is the same for all intensities.

Explanation:

• The velocity (c) of an wave of electromagnetic is indicated for any specified medium

c = νλ,

where

ν =  electromagnetic wave frequency

λ =  electromagnetic wave wavelength

• The velocity of the wave of electromagnetic varies as frequency and wavelength change. So, for all frequencies and all wavelengths in any form, the intensity of an wave of electromagnetic is not equal. With medium transition the amplitude of an electromagnetic wave varies. Additionally, the velocity of an wave of electromagnetic on every medium is the same for all intensities.

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