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How fast do all electromagnetic waves travel in a vacuum? a. c b.343 m/s c.It depends...

How fast do all electromagnetic waves travel in a vacuum?

a. c

b.343 m/s

c.It depends on the frequency

d.It depends on the wavelength

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Answer #1

Electromagnetic wave in vaccuum travels at the speed of light.

Speed of light is c = 3×10⁸ m/s

Option A is correct.

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