Determining the Work Function in the Photoelectric Effect
A metal surface is illuminated with light of frequency \(1.20 \times 10^{15}\, \text{Hz}\). The maximum kinetic energy of the emitted photoelectrons is measured to be \(2.50 \times 10^{-19}\, \text{J}\). Using the photoelectric effect equation \(E_{max} = hf – \Phi\), and taking Planck’s constant \(h = 6.63 \times 10^{-34}\, \text{J s}\) and the elementary charge \(e […]