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Test #2 Question #2b

Posted: Fri Nov 02, 2018 10:44 pm
by Helen Mejia 1I
Hi, can someone explain how does the speed of the ejected electron in part (a) change when the intensity of the light is increased?

Re: Test #2 Question #2b

Posted: Fri Nov 02, 2018 11:14 pm
by Jerome Mercado 2J
Since the electron can be already ejected surpassing threshold energy, increasing the intensity of the light increases the amount of ejected electrons and the speed of which electrons are ejected. This is because light intensity is directly proportional to frequency as a mechanical view of light (kinetics).

Re: Test #2 Question #2b

Posted: Fri Nov 02, 2018 11:19 pm
by 505211599
The speed of an ejected electron is not dependent on the intensity of the photon because, as we know, the photoelectric effect theorized that the light is not thought of as a wave propagating through space but instead thought of as quantized packets of energy. Because of this, the energy is dependent on hv, where v is frequency.

Re: Test #2 Question #2b

Posted: Fri Nov 02, 2018 11:25 pm
by Helen Mejia 1I
okay, thank you!

Re: Test #2 Question #2b

Posted: Wed Dec 05, 2018 4:41 pm
by Sapna Ramappa 1J
If the electron is ejected, then increasing the intensity of the light will increase the number of ejected photons, but this does not have an effect on the speed of the ejected electron.