Electrons ejection

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Clara Cho 2K
Posts: 84
Joined: Wed Sep 18, 2019 12:18 am

Electrons ejection

Postby Clara Cho 2K » Wed Nov 13, 2019 1:52 pm

how would you calculate the wavelength of the incoming light, if the frequency of the light is fixed and you're given a value for the KE?

SGonzales_3L
Posts: 55
Joined: Thu Jul 11, 2019 12:17 am

Re: Electrons ejection

Postby SGonzales_3L » Wed Nov 13, 2019 2:13 pm

You would use the equation for the conservation of energy in the photoelectric effect. You know that:
Ephoton= Threshold Energy + Kinetic Energy
The threshold energy was supposed to be calculated in the Q2A. The Kinetic Energy was given.
Ephoton= hv where h=Planck's constant and v= frequency. Using this knowledge and , you can solve for the wavelength of the incoming light.

Mai V 4L
Posts: 55
Joined: Fri Sep 28, 2018 12:23 am

Re: Electrons ejection

Postby Mai V 4L » Sun Dec 08, 2019 9:15 am

Does anyone have a video theey think is a good reference for this topic?


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