Q.

Consider the statements
1. Photon is a particle of light.
2. Mass of photon is not defined.
3. Speed of photon is as the speed of light.
4. Photons are charged.
Which options are correct?
(a)1 and 2
(b)1, 2, 3 and 4
(c)1, 2 and 3 Right sign
(d)1 and 3
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