Light of wavelength 5000Å falls on a metal surface of work function 1.9eV.
Channel: Doubtnut
Date: 2020-08-02

Light of wavelength 5000Å falls on a metal surface of work function 1.9eV. Find (i) the energy of photons in eV (ii) the kinetic energy of photoelectrons and (iii) the stopping potential. Use `h=6.63xx10^(-34)Js`,  `c=3xx10^8ms^-1 , e=1.6xx10^-9C.`