Q. Velocity of electromagnetic waves in vacuum depends upon

A
frequency of waves
B
amplitude of waves
C
velocity of source
D
none of the above
Solution:

The speed of light in a vacuum does not depend on frequency (or wavelength).
When light travels through any medium other than a vacuum, its speed is lower than in the vacuum.
An electromagnetic wave transports its energy through a vacuum at a speed of 3.00 x 108 m/s

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