Suppose I have a cathode with a work function of 3eV and an anode at a potential of 2V above the cathode. If a photon having 2eV of energy hits the cathode, what happens?
A. An electron is emitted from the cathode because it only takes 1eV to go from the cathode to the anode.
B. An electron is not emitted because 3eV are required to escape the cathode.
Sources seem unclear on this and I need to know whether it is possible to knock electrons off of a surface using light of a lower energy than the work function given a sufficient electrical potential.