Photoelectric Effect: Particle vs. Wave Theory Q&A

  • Context: Undergrad 
  • Thread starter Thread starter fatal1
  • Start date Start date
  • Tags Tags
    Photoelectric
Click For Summary

Discussion Overview

The discussion revolves around the photoelectric effect, specifically examining how the cutoff frequency relates to the particle theory of light versus the wave theory. Participants explore the relationship between photon energy and frequency, as well as the mechanisms behind electron ejection when light interacts with metals.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant questions how the cutoff frequency supports the particle theory of light over the wave theory.
  • Another participant inquires about the relationship between photon energy and frequency, and the cause of electron ejection when light strikes a metal.
  • A participant asserts that the energy of a photon is proportional to its frequency and suggests that electrons are ejected when they absorb the photon's energy.
  • It is proposed that in the wave model, frequency would not affect the energy with which electrons are ejected, only the intensity of the light, which raises questions about the wave model's ability to explain the cutoff frequency.
  • A link to an external website is provided for additional information on the topic.

Areas of Agreement / Disagreement

Participants express differing views on the implications of the cutoff frequency for the particle versus wave theories of light, indicating that multiple competing views remain. The discussion does not reach a consensus.

Contextual Notes

Some assumptions regarding the definitions of energy, frequency, and intensity are not explicitly stated, and the discussion does not resolve the underlying mathematical relationships involved in the photoelectric effect.

fatal1
Messages
4
Reaction score
0
I am having a bit of trouble understanding how a cutoff frequency would support the particle theory of light over the wave theory?
 
Last edited:
Physics news on Phys.org
What are your thoughts on these questions:

How is the energy of a photon related to its frequency?
What causes the electrons (of a metal for example) to be ejected when light hits it?
 
Last edited:
energy of photon would be porportional to its frequency, and I believe it gets ejected when it absorbs the photon's energy

I think I get it now. Because in the wave model, frequency would not effect how much energy the electrons are ejected with...only the intensity of the light would? So it can't explain the cutoff. Right?
 

Similar threads

Replies
4
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 35 ·
2
Replies
35
Views
4K
  • · Replies 8 ·
Replies
8
Views
829
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 2 ·
Replies
2
Views
1K