Ultraviolet light of wavelength 300nn and intensity `1.0Wm^-2` falls on the surface of
Channel: Doubtnut
Date: 2020-07-26

Ultraviolet light of wavelength 300nn and intensity `1.0Wm^-2` falls on the surface of a photosensitive material. If one per cent of the incident photons produce photoelectrons, then the number of photoelectrons emitted per second from an area of 1.0 `cm^2` of the surface is nearly