Photoelectric Effect

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Soyoung Park 1H
Posts: 30
Joined: Sat Sep 29, 2018 12:15 am

Photoelectric Effect

Postby Soyoung Park 1H » Sat Oct 13, 2018 11:07 pm

When do you use photoelectric effect equation? The equation says (E=hv)-(work function)=Ex. What does Ex mean and stand for?

LorenzoDuvergne3I
Posts: 60
Joined: Fri Sep 28, 2018 12:25 am

Re: Photoelectric Effect

Postby LorenzoDuvergne3I » Sat Oct 13, 2018 11:42 pm

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.

Nancy Hu - 4E
Posts: 30
Joined: Fri Sep 28, 2018 12:28 am

Re: Photoelectric Effect

Postby Nancy Hu - 4E » Sat Oct 13, 2018 11:59 pm

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.


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