Answers

2015-03-02T18:25:20+05:30
PHOTON:a quantum of electromagnetic radiation, usually considered as an elementary particle that is its own antiparticle and that has zero rest mass and charge  and a spin of one. 

QUANTUM:
the smallest quantity of radiant energy, equal toPlanck's constant times the frequency of theassociated radiation.the fundamental unit of a quantised  physical magnitude, as angular momentum.
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2015-03-02T20:47:40+05:30
A photon is an elementary particle, the quantum of light and all other forms of electromagnetic radiation. It is the force carrier for the electromagnetic force
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