The diagram below shows a portion of the energy-level diagram for a particular atom.When the atom undergoes transition I,the wavelength of the emitted radiation is 400 nm,and when it undergoes transition I1.the wavelength is 700 nm 111
transition Ill.A photon emitted during transition IIl is then incident on a metal a) Calculate the wavelength of the emitted radiation when the atom undergoes surface of work function2.1eV. the photon. (bCalculate the maximum kinetic energy of the electron ejected from the metal by (c) Calculate the de Broglie wavelength of the ejected electron