question_answer

A metal plate of area \[1\times {{10}^{-4}}{{m}^{2}}\] is illuminated by a radiation of intensity \[16\text{ }mW/{{m}^{2}}.\] The work function of the metal is 5 eV. The energy of the incident photons is 10 eV and only 10% of it produces photo electrons. The number of emitted photo electrons per second is \[\left[ 1\,\,eV=1.6\times {{10}^{-19}}J \right]\]

Answer:

\[\left( {{10}^{11}} \right)\]