The work function of a metal is 2.0 eV. What is the maximum kinetic energy of an electron ejected by light of wavelength
E ≈ 3.105 eV. KEmax = 1.105 eV ≈ 1.768×10⁻¹⁹ J.
Ref: NCERT Class 11 Chemistry > Chapter 2: Structure of Atom > Topic: Developments Leading to Bohr Model - Electromagnetic Radiation and Spectrum