A beam of light has three wavelengths `4144 Å`, and `6216 Å` with a total instensity
Channel: Doubtnut
Date: 05/07/2020

A beam of light has three wavelengths `4144 Å`, and `6216 Å` with a total instensity of `3.6 xx 10^(-3) Wm^(-2)` equally distributed  amongst the three wavelengths. The beam falls normally on  an area `1.0 cm^2` of a clean metallic surface of work function 2.3  eV. Assume that there is no loss of light by reflection number of photoelectrons liberated in two seconds.