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The photons have no mass. Keep in mind that there is a similar situation in which we cannot apply equations for electromagnetic radiation to electrons. For example, we cannot use c = lambda nu for problems involving properties of electrons.
While all the previous replies have stated that light doesn't have mass and I agree, I just wanted to add that I remember Dr. Lavelle saying that the equation can only be used for particles with rest mass (mass at rest). It can be applied to everything else but light.
The first equation you've listed is the De Broglie equation and that's used for electrons or objects that have a mass. You cannot use light with the De Broglie equation. The second equation you CAN use for photons (light).
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