Explain briefly how Einstein's photoelectric equation accounts for all the observations in the photoelectric effect. Share with your friends Share 0 Sanjay Upadhyay answered this Dear student laws of photoelectric emission area)It is an instantaneous process .Almost no time lag between incident photons and emission of electronb)Greater the intensity of incident photons greater the photoelectric current.It is independent of frequency.c)Greater the value of frequency of incident photon greater the kinetic energy of electron so larger the value of stopping potential.Photoelectric effect can be understood based on particle nature of light that is light is a bundle of photons.In collision of photon to an electron a photon gives its all energy to the electron inelectron.Let the energy of incident photon on metal surface is hf.ifwork function of metal is W which is defined as mini mum amount of work done to just remove the electron.Intensity of light is directly proportional to number of photons incident per second.As for one incident photon one electron is emitted.So current increases with increase in intensity.From conservation of energy of photon Energy of photon=work function of metal+loss in kinetic energy of electron in collision+kinetic energy with which it comes outside the surface.hf=W+loss +KK=hf-W-loss Kinetic energy is maximum when loss is zero Kmaximum=hf-W ...this equation is called photoelectric equation.If the light is considered as wave nature than there should be some time lag between incident light and emission of electron as electron should take some time to absorb energy from wave.Butelectron comes out instantly which is one prove of particle nature of photon becacse a particle can immediately transfer its energy to electron in collision.Regards 1 View Full Answer
