We’re being asked to calculate for the maximum possible kinetic energy of the emitted electron from a sodium metal. When photons with enough energy hit the surface of a metal, electrons are emitted. This phenomenon is known as the Photoelectric Effect.
Total energy (ΔE) in photoelectric effect can be calculated using the following equation:
• ΔE is the total energy or the energy of the light/photon/radiation and can be calculated using the equation:
Etotal energy = J
h = Planck’s constant = 6.626x10-34 J∙s
ν = frequency = Hz or s-1
• Ework function is the work function or threshold frequency of the metal (minimum energy required to remove an electron from the metal)