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Which property of an electromagnetic wave, depends on the medium in which it is travelling?

Which property of an electromagnetic wave, depends on the medium in which it is travelling? Correct Answer Velocity

The frequency, wavelength and time period can all vary according to the wave producing source. But, the velocity of an electromagnetic wave depends upon the medium through which it is travelling. The velocity of wave in a vacuum is termed as speed of light, which is assumed to be 3 x 108 m/s.

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