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Photons of frequency v fall on a metal surface for which the threshold frequency is $v_0$. Then, |
All ejected electrons have the same kinetic energy $h(v−v_0)$ the ejected electrons have a distribution of kinetic energy from zero to $h(v−v_0)$ the most energetic electrons have kinetic energy $hv$ the average kinetic energy of ejected electrons is $hv_0$. |
the ejected electrons have a distribution of kinetic energy from zero to $h(v−v_0)$ |
After taking energy from photon a electron goes through many collisions and hence loses its energy. If loss of energy is such that the energy remains with the electron is less than $h\nu_0$ then electron will not come out of metal surface. Hence energy with the electron coming out of the metal surface can vary between zero to a maximum value of $h(\nu - \nu_0)$. |
