Photoelectric Effect

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Tracey Tran 3I
Posts: 50
Joined: Thu Jul 11, 2019 12:16 am

Photoelectric Effect

Postby Tracey Tran 3I » Sun Oct 20, 2019 3:07 pm

Can someone explain why increasing the intensity of light does not help eject an electron again?

Bryce Ramirez 1J
Posts: 120
Joined: Sat Aug 24, 2019 12:16 am

Re: Photoelectric Effect

Postby Bryce Ramirez 1J » Sun Oct 20, 2019 3:14 pm

It doesn't eject an electron because the metal needs to have a certain threshold of frequency for the electron to be ejected. By increasing the intensity, all that does is increase the amount of photons present in the light, but will have no effect in actually on ejecting the electrons.

Venus_Hagan 2L
Posts: 104
Joined: Fri Aug 02, 2019 12:16 am

Re: Photoelectric Effect

Postby Venus_Hagan 2L » Sun Oct 20, 2019 3:27 pm

An electron is not ejected because increasing the light's intensity only increases the number of photons. If your 10 photons don't have enough energy, adding 50 more of the same energy won't cause the electrons to eject. You must increase the energy of each of the photons allowing each to overcome the threshold and eject an electron.

Bryce Barbee
Posts: 103
Joined: Wed Sep 18, 2019 12:20 am

Re: Photoelectric Effect

Postby Bryce Barbee » Sun Oct 20, 2019 3:29 pm

It does not make the electron eject because each photon needs to have enough energy to make the electron eject. If the photons don't have enough of the energy, having more photons is not going to help.

saigorijavolu2k
Posts: 108
Joined: Sat Sep 28, 2019 12:15 am

Re: Photoelectric Effect

Postby saigorijavolu2k » Sun Oct 20, 2019 4:16 pm

Each photon must have enough energy to eject the electron. Increased intensity means that there are more photons. There must be an increased frequency.

Betania Hernandez 2E
Posts: 107
Joined: Fri Aug 02, 2019 12:15 am

Re: Photoelectric Effect

Postby Betania Hernandez 2E » Sun Oct 20, 2019 6:25 pm

Increasing the intensity of light would only increase the number of photons. If the photons don't have sufficient energy to overcome the binding between the electron and the metal then just increasing the number of photons won't cause an electron to eject since each photon has the same energy. You would have to increase the frequency in order for there to be an increase in the energy of the photon to overcome the threshold and eject an electron.

mayarivers3I
Posts: 52
Joined: Wed Sep 18, 2019 12:18 am

Re: Photoelectric Effect

Postby mayarivers3I » Sun Oct 20, 2019 9:30 pm

Increasing the intensity of light does not eject an electron because in order for that to happen there would need to be an increase in frequency, and increasing the intensity only increases the photons, therefore an electron would not be ejected.

Angelo Mapalo 4E
Posts: 50
Joined: Sat Aug 24, 2019 12:18 am

Re: Photoelectric Effect

Postby Angelo Mapalo 4E » Sun Oct 20, 2019 9:33 pm

Increasing the intensity of light does not result in an ejected electron because in this experiment, the light is acting as particles (photons). Increasing the light would only increase the amount of photons, not how much energy each photon has. So if one photon doesn't have enough energy to eject an electron, then no matter how many photons you shoot at the metal surface, none of them will be able to eject an electron.


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