If photon is the particle,then why it's rest mass is zero
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according to special relativity, light ALWAYS travels with the light speed c, and is NEVER at rest. And so it has zero REST mass. which means that though photons don't have rest mass, they do have energy and thus theyhave mass. The photons are wave particles.
dara1:
But according to photo electric effect which shows light behave as particle
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