A monochromatic source of light operating at 500W emits `6xx10^(20)`
Channel: Doubtnut
Date: 2020-08-02

A monochromatic source of light operating at 500W emits `6xx10^(20)` photon per second. Find the wavelength of the light used. Use `h=6.6xx10^(-34)Js , C=3xx10^8m//s`