JEE Main 202523 Jan, Evening shiftPhysicsMediumDual Nature of Matter and Radiation146× since 2002
In photoelectric effect an em-wave is incident on a metal surface and electrons are ejected from the surface. If the work function of the metal is 2.14 eV and stopping potential is 2V, what is the wavelength of the em-wave? (Given eVnm where h is the Planck's constant and c is the speed of light in vaccum.)