Photons vs Electrons

[Avantika MOhan_2B]

When calculating de broglie wavelength - can we do so for photons?

[806021969]

No because Photons have negligible mass and everything that has relevant mass such as electrons, neutrons and protons can use the Borglie equation, but since photons don't have a mass it wouldn't make sense to utilize this equation in the same way when calculation de Broglie wavelength.

[Destiny Caldwell 3J]

For photons you would use E= h*f; where E is the energy of the photon, h is Planck’s constant, f is the frequency of the photon.

If you know the frequency of a photon, you can use the equation , where c is the speed of light, to find its wavelength.So, while the de Broglie wavelength equation is not directly applicable to photons, you can use other relationships involving energy and frequency to characterize their wave-like properties.