What is the frequency of a electromagnetic wave with a wavelength of 1.0 X $10^5$ m?

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Answer 1 · 2014-07-01T16:11:20

The frequency , speed and wavelength of an electromagnetic wave are related by the formula

Speed = frequency x wavelength

frequency = speed / wavelength

substituting the values

frequency = 3 x $10 ^8$ m /s / 1 x $10^15$ m

               =  3 x #10^-7# /s

What is the frequency of a electromagnetic wave with a wavelength of 1.0 X 10^510^5 m?