Simple Photoelectric Effect Conceptual Question

AI Thread Summary
The discussion centers on the photoelectric effect, specifically the relationship between photon energy and the work function. When the energy of a photon (hf) exceeds the work function (φ), electrons are ejected with kinetic energy calculated by the equation KE_Max = hf - φ. If the photon energy is equal to the work function, the kinetic energy of the ejected electron is zero, meaning no excess energy is available for motion. Conversely, if the photon energy is less than the work function, no electrons are ejected at all. Understanding these principles is crucial for grasping the photoelectric effect.
fallen186
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This is more of a conceptual question.

Homework Statement


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1.KE_{Max} = hf-\phi

2.\phi = Work Function. The minimum energy required to free an electron with a photon

3.E=hf This it the energy of a photon
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In my book it says that" hf > \phi" then electrons can be ejected" and ""If the light frequency is too low, such that the photon energy hf is less than the work function \phi, then there is simply insufficeient energy in any given photon to free an electron.

What is the kinetic energy of an electron if the energy of a photon is the same as the Work Function? Like what happens?
 
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the kinetic energy of an electron is zero
Like what happens? !
 
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