Energy needed to eject an electron

[406280016]

How would you find the energy needed to eject an electron given the wavelength and the total energy?

[305878818]

To find the energy required to eject an electron, you can use the photoelectric effect equation, which links the energy of the incident photon to the work function of the material and the kinetic energy of the emitted electron. The energy of the photon is determined by its wavelength. If you're given the total energy, set it equal to the sum of the work function and the kinetic energy. Solving for the kinetic energy provides the energy needed to eject the electron, indicating whether the electron is successfully emitted (positive kinetic energy) or lacks sufficient energy for emission (negative kinetic energy).

[Miyown Meeks 2F]

Hi, so in this case you would need to use E=hv and convert v to c/lambda giving you E=hc/lambda, then you would plug in this energy of the photon and the total energy you would then rearrange the Ek=E-work function formula and plug in your known values