Question

If the energy of a photon is 10 ev then its momentum is

Answer 1

Answer:

Explanation:

Energy oh photon = 10ev

The momentum of a photon -  p = E/c

Energy = 10 eV, thus its momentum = 10eVc where c is the velocity of light’

There is a relationship between photon momentum p and photon energy E that is constant with the relation of the total energy of a particle -

E² = (pc)² + (mc)².

Thus, E² = (pc)² + (mc)²

= E = pc, or p=E/c

= P = E /C = 10 * 1.6 * 10^-19 / (3 * 10^8)

= 5.33 × 10⁻²⁷ kg m/s.