What is the energy of visible light?

1 Answer
Mar 9, 2018

The energy carried by red photons is 1.8 \ "eV" and that of blue photons is 3.1 \ "eV".

Explanation:

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Visible light occupies a tiny part of electromagnetic spectrum.

As you can see we have red and blue colors on extreme ends.

Energy of a photon is given by

E=hnu" (where "E" is energy, "h" is Planck's constant,"and nu" is frequency)"

color(red)(h=6.162607004 xx 10^-34 \ "m"^2 \ "kg s"^-1)

Using this relation we get, energy carried by a red photon is ~~ 1.8 \ "eV" and of a blue photon is ~~ 3.1 \ "eV".

Hope it helps you!