Work Function  [ENDORSED]

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Iris Shim 1E
Posts: 20
Joined: Fri Sep 29, 2017 7:04 am

Work Function

Postby Iris Shim 1E » Sun Oct 22, 2017 8:28 pm

Does the energy of a photon have to be greater than the work function in order to remove the electron? If the energy of the photon is exactly equal to the work function, would the electron still jump an energy level?

Christietan3F
Posts: 18
Joined: Sat Jul 22, 2017 3:01 am

Re: Work Function

Postby Christietan3F » Sun Oct 22, 2017 8:37 pm

The energy of the photon has to be greater than or equal to the work function in order to remove the electron. If the energy of the photon is greater than the work function, the excess energy becomes kinetic energy.

SitharaMenon2B
Posts: 50
Joined: Thu Jul 27, 2017 3:01 am

Re: Work Function  [ENDORSED]

Postby SitharaMenon2B » Sun Oct 22, 2017 9:17 pm

For your second question, yes. If the energy of the photon is exactly equal to the work function, the electron would still be emitted, but it would not have any kinetic energy.

Wenjie Dong 2E
Posts: 53
Joined: Fri Jun 23, 2017 11:40 am

Re: Work Function

Postby Wenjie Dong 2E » Sun Oct 22, 2017 9:22 pm

I agree with the above two answers. Both yes.

Gobinder Pandher 3J
Posts: 21
Joined: Fri Sep 29, 2017 7:07 am

Re: Work Function

Postby Gobinder Pandher 3J » Sun Oct 22, 2017 9:59 pm

Here's an equation to help visualize it. (Energy of Photon)>(Work Function) ======> (Ejection of Electron). Note that if the energy of the incoming photon IS greater than the work function, then the ejected electron will have excess energy (aka kinetic energy).

Sophie 1I
Posts: 51
Joined: Fri Sep 29, 2017 7:04 am

Re: Work Function

Postby Sophie 1I » Sun Oct 22, 2017 10:20 pm

Yes, if a photon has energy of the photon is greater than or equal to the work function the electron will be removed


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