Work Function vs. Threshold Energy  [ENDORSED]

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Jasmine Wu 1L
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Work Function vs. Threshold Energy

Postby Jasmine Wu 1L » Sun Oct 15, 2017 1:51 pm

Hello!

What is the difference between the work function and the threshold energy?

Riya Pathare 2E
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Re: Work Function vs. Threshold Energy  [ENDORSED]

Postby Riya Pathare 2E » Sun Oct 15, 2017 1:56 pm

To the best of my knowledge I think work function and threshold energy are the same because they both represent the minimum energy needed to remove the electron form the metal surface.

Katherine Jordak 1H
Posts: 51
Joined: Fri Sep 29, 2017 7:05 am

Re: Work Function vs. Threshold Energy

Postby Katherine Jordak 1H » Sun Oct 15, 2017 3:03 pm

I think for our purposes the two terms can be used interchangeably. However, I believe work function describes the minimum amount of energy needed to eject an electron, and threshold energy is used when talking about the frequency required to eject an electron.

Yuting Zhu 3D
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Re: Work Function vs. Threshold Energy

Postby Yuting Zhu 3D » Sun Oct 15, 2017 3:15 pm

When you see it on quizzes or tests, they basically mean the same thing. When light hit the surface, the photon energy (from the light source) has to be bigger or equal to work function/threshold energy in order to remove the electron.

Nathan Tu 2C
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Joined: Fri Sep 29, 2017 7:07 am

Re: Work Function vs. Threshold Energy

Postby Nathan Tu 2C » Sun Oct 15, 2017 8:15 pm

Essentially they are the same thing. The work function describes the work being done to remove an electron. Since work requires energy, it can be said that the threshold energy is the energy required to do the work of removing an electron.

Annie Lieu-1H
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Re: Work Function vs. Threshold Energy

Postby Annie Lieu-1H » Sun Oct 15, 2017 8:52 pm

They're the same thing basically. Both represent the amount of energy needed to eject an electron. I think for test purposes though they use the term work function!


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