Give three characteristics of photon.

Explanation

1. Radiation consists of packets of energy called photons(or quanta).
2. The rest mass of the photons is zero.
3. The photons are electrically neutral.
4. The photons travel with the speed of light.
5. The energy of each photon is given by E = hv where h=plank.s constant and v= frequency of photon.
6. The energy of the photon is directly proportional to the frequency of the photon.
7. Momentum of the photon is given by, `p=mc " or " p=h//lamda`