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properties of Photon.

★ Rest mass of Photon is zero. ★ Range of Photon is infinite. ★ Spin of Photon is 1. ★ Photon has no charge. ★ It has no antiparticle it is stable.

what is photon ?

Radiation consists of quantum of energy. Quantum of energy (packet of energy or quanta) is known as photon. photon is a particle. It possesses wave nature also. Rest mass of a Photon is zero.