Photoelectric effect wavelength

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Homework Help Overview

The discussion revolves around the photoelectric effect, specifically focusing on the relationship between the kinetic energy of emitted electrons and their wavelength. Participants are exploring how to connect these concepts using relevant equations.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants discuss using kinetic energy equations to find the velocity of electrons and then applying de Broglie's relationship to determine wavelength. There is uncertainty about whether to use de Broglie's relationship or Planck's equation, given the lack of specificity in the original question.

Discussion Status

The conversation is ongoing, with participants seeking clarification on the appropriate equations to use. Some guidance has been provided regarding the relevance of de Broglie's relationship, but confusion remains about the assumptions underlying the problem.

Contextual Notes

There is a noted lack of specificity in the original question, which has led to varying interpretations of the concepts involved. Participants are encouraged to clarify the original problem statement for better guidance.

blindsided
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This is not a specific question; I'm just unclear about a concept.

Homework Statement



Given the kinetic energy of an electron emitted, how would you find the wavelength?

Homework Equations



E=h*frequency

or

E=0.5mv2

The Attempt at a Solution



I'm thinking I would use the secon equation, find v, then use de Broglie's relationship to find wavelength. Am I on the right track?
 
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blindsided said:
I'm thinking I would use the secon equation, find v, then use de Broglie's relationship to find wavelength. Am I on the right track?
Assuming that the question is to find the de Broglie wavelength of the electron, then you are on the right track.
 
Hmm...
The question hadn't specified de broglie wavelength- hence my confusion as to whether I would use de Broglie's relationship or just Planck's equation.
I thought Planck's equation only pertained to EM radiation?
 
Post the question word for word as it was given to you.
 

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