Its picture of continuous absorption of energy
from radiation could not explain the independence of Kmax on
intensity, the existence of no and the instantaneous nature of the
process Einstein explained these features on the basis of photon
picture of light According to this, light is composed of discrete
packets of energy called quanta or photons Each photon carries an
energy E (= h n) and momentum p (= h/l), which depend on the
frequency (n ) of incident light and not on its intensity