# Momentum Of Photon Formula

Momentum Of Photon Formula is

$p=\frac{h}{\lambda}$

Where,

p = photon momentum

h =Plank’s constant

λ = photon’s wavelength

Photon momentum is comparatively small value to measure.

An electron with the same momentum has a 1460 m/s velocity, which is non relativistic.

## To find photon Energy

$E=\frac{hc}{\lambda }$

Where,

E = photon energy

h = Planck’s constant (6.626×10−34 Js)

c = speed of the light

λ = wavelength of the light