photoelectric effect equation

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MaddyMoore3A
Posts: 9
Joined: Wed Sep 21, 2016 2:59 pm

photoelectric effect equation

Postby MaddyMoore3A » Fri Sep 30, 2016 12:15 pm

Am I correct in assuming the kinetic energy is equal to the energy of the incident light, or are they two separate entities?

Elan Karlin Dis3H
Posts: 20
Joined: Wed Sep 21, 2016 2:57 pm

Re: photoelectric effect equation

Postby Elan Karlin Dis3H » Fri Sep 30, 2016 1:06 pm

They are two separate entities, however, the energy of the incident light determines the amount of kinetic energy of the electron. The energy of the incident light is the energy of the light shone unto the metal. This energy must be greater than a certain threshold energy for an electron to be ejected off the metal. The energy of the incident light minus the threshold energy is equal to the kinetic energy of the ejected electron.


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