In photo electic effect we\nassume the photon energy\nis proportional to its freq.\nAnd is completely absorbed\nby the electrons in the\nmetal. V > Vo then the photoelectric current\n1. Decreases when freq. Of\nphton Increses\n2. Increases when freq. Of\nphoton increses\n3. Does not depend on freq\nbut only on the intensity\n4.intensity of the incident\nbeam\n4. Depend on both intensity\nand freq.\nGive me correct answer and\nmethod

ans is 3. it depends only on intensity of the light, it doesn't depend upon frequency of light. increase in frequency will increase energy of the photon. that will not affect the current because photon and electron does one to one interactions, so no. of emitted electron will not change so no change in flowing charge, that implies no change in current. but increase in intensity will increase no. of photons so more electrons will be emitted. Hence increase in photo current.