85 Surface of certain metal is first illuminated with light

Last updated: 5/29/2023

85 Surface of certain metal is first illuminated with light of wavelength 350 nm and then by light of wavelength 540 nm It is found that maximum speed of the photo electrons in the two cases differ by a factor of 2 The work function of the metal in eV is close to L double Energy of photon a 1 8 1240 in nm b 1 4 eV c 2 5 d 5 6 JEE 2018