How does the speed of electromagnetic wave in vacuum depend upon the source of radiation? Options: A . &nbspIncreases as we move from g-rays to radio waves B . &nbspDecreases as we move from g-rays to radio waves C . &nbspIs same for all of them D . &nbspNone of these

How does the speed of electromagnetic wave in vacuum depend upon the source of r

Question

How does the speed of electromagnetic wave in vacuum depend upon the source of radiation?

Options:

A . Increases as we move from g-rays to radio waves

B . Decreases as we move from g-rays to radio waves

C . Is same for all of them

D . None of these

Answer: Option C
:
C
The speed of EM waves in vacuum is a constant (approx.

3 \times 10^{8}

m/s).

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