A beam of light has three wavelengths `4000 �, 5000 �, 6000�` with a total intensity `3 xx 10^(-3)
Channel: Doubtnut
Date: 28/01/2020

A beam of light has three wavelengths `4000 �, 5000 �, 6000�` with a total intensity `3 xx 10^(-3) W//m^(2)` equally distributed amongst the three wavelenth. The beam falls normally on an area `2 cm^(2)` of clean metallic surface of work function `2.4 eV`. Calculate photo current. (Assume each energetically suitable photon emits one electron)