How do you calculate frequency of light?

1 Answer
Mark C.
Sep 27, 2017

I'm assuming you have been given some further information. Otherwise you can only give a range depending on which area of the spectrum it's in.

Explanation:

The most common question is using c = #f.lambda# where c is the speed of light in a vacuum and #lambda# is the wavelength. You are given velocity and wavelength.

The other one often used connects energy and frequency (E = h.f) and again you are given a value for h, Planck's constant and the photon energy, E.

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