Threshold level and Work Function  [ENDORSED]

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Rebecca Cheung 1E
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Joined: Fri Sep 29, 2017 7:04 am

Threshold level and Work Function

Postby Rebecca Cheung 1E » Fri Oct 13, 2017 9:50 am

Threshold level and Work Function are basically the same thing right?

Christy Lee 2H
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Joined: Fri Sep 29, 2017 7:07 am
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Re: Threshold level and Work Function

Postby Christy Lee 2H » Fri Oct 13, 2017 9:51 am

Yes they're the same thing

Brigitte Phung 1F
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Re: Threshold level and Work Function

Postby Brigitte Phung 1F » Sat Oct 14, 2017 4:48 pm

Yes they are! They are just names that are used interchangeably and are both denoted by the symbol Φ.

Janice Xiao 1I
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Joined: Thu Jul 13, 2017 3:00 am

Re: Threshold level and Work Function  [ENDORSED]

Postby Janice Xiao 1I » Sat Oct 14, 2017 5:24 pm

Yes. It's also known as the minimum amount of energy needed to remove an electron.

Ashley Fallon 3C
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Re: Threshold level and Work Function

Postby Ashley Fallon 3C » Sun Oct 15, 2017 7:06 pm

Yes, the threshold is the same as the work function. Essentially it is just the amount of energy needed to eject an electron from a piece of metal.

Jessica Benitez 1K
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Joined: Fri Sep 29, 2017 7:04 am

Re: Threshold level and Work Function

Postby Jessica Benitez 1K » Sun Oct 15, 2017 7:14 pm

Yes! When the kinetic energy of an ejected electron is zero, then the work function must equal the energy of the photon hitting the metal surface.

Magdalena Palavecino 1A
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Re: Threshold level and Work Function

Postby Magdalena Palavecino 1A » Mon Oct 16, 2017 9:40 pm

When do we use 1/2mv2 for Ek and when do we use de broglies equation for Ek?


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