In a photoelectric effect experiment a point source of light

Last updated: 6/11/2023

In a photoelectric effect experiment a point source of light of power 3 2 mW emits photons each of which has 5 eV energy The source is located at a distance of 0 8 m from the centre of a stationary metal disk having a work function of 3 eV The metal disk has a radius of 8 x 10 m Assuming that one photoelectron is emitted for every 106 photons striking the surface of the disk how many photoelectrons are emitted every second A 1 67 x 105 B 105 C 100 D No photoelectrons are emitted from the surface