4 Light of wavelength 800 nm is shone on a metal surface

Last updated: 6/27/2023

4 Light of wavelength 800 nm is shone on a metal surface connected to a battery The work function of the metal is 1 25 eV Find the extinction voltage or retarding voltage at which the photoelectron current stops Find the highest speed of the emitted photoelectrons at this incident frequency Ans Vr 0 3 volt 3 2 105m s