Photoelectric Effect Module Question  [ENDORSED]

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Faisal Alshamaa - 1L
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Photoelectric Effect Module Question

Postby Faisal Alshamaa - 1L » Thu Apr 26, 2018 11:16 pm

24. In photoelectric experiments, typically what part of the electromagnetic spectrum is the incoming light?

A. Ultraviolet

B. Infrared

C. Visible light

D. Gamma rays

E. None of the above

I'm not sure what the answer is. I thought it was gamma rays since those have the highest energy and would surely eject electrons off of metals but that was wrong? Help :)
Thanks!

Jonathan Marcial Dis 1K
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Joined: Fri Apr 06, 2018 11:03 am

Re: Photoelectric Effect Module Question  [ENDORSED]

Postby Jonathan Marcial Dis 1K » Thu Apr 26, 2018 11:32 pm

I’m almost certain the answer to that would be UV, but I could be wrong. In Dr. Lavelle’s modules he explains it using UV. For sure visible light would not eject electrons.

Nimrat Brar 1E
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Re: Photoelectric Effect Module Question

Postby Nimrat Brar 1E » Fri Apr 27, 2018 12:53 am

The incoming light is Ultraviolet according to the modules that Lavelle has posted.

YeseniaGomez_1L
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Re: Photoelectric Effect Module Question

Postby YeseniaGomez_1L » Fri Apr 27, 2018 7:57 am

According to the graphics on photoelectric effect the light is ultraviolet.

Caroline Crotty 1D
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Re: Photoelectric Effect Module Question

Postby Caroline Crotty 1D » Sun Apr 29, 2018 3:51 pm

As light amplitude increases, the kinetic energy of photoelectrons remain constant. So while the amount of electrons ejected increases as amplitude of light increases, typically the light comes from ultraviolet.

Elana Weingord 1C
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Joined: Fri Apr 06, 2018 11:05 am

Re: Photoelectric Effect Module Question

Postby Elana Weingord 1C » Mon May 07, 2018 7:17 pm

Another question from this module:

"Model of light in the photoelectric effect needs to change from a ________ model to a ________ model."


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