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Photoelectric Effect

Posted: Sat Oct 13, 2018 11:07 pm
by Soyoung Park 1H
When do you use photoelectric effect equation? The equation says (E=hv)-(work function)=Ex. What does Ex mean and stand for?

Re: Photoelectric Effect

Posted: Sat Oct 13, 2018 11:42 pm
by LorenzoDuvergne3I
It might be short for excess energy, since the energy of the photon (e=hv) minus the energy threshold (work function) is the remaining energy that is converted into kinetic energy by the electron.

Re: Photoelectric Effect

Posted: Sat Oct 13, 2018 11:59 pm
by Nancy Hu - 4E
The excess energy is used to eject electrons so it is converted into kinetic energy. Kinetic energy can be solved by using the formula 1/2mv^2.