Calculating KE of Slowest Emitted Photoelectron

  • Thread starter Thread starter kingyof2thejring
  • Start date Start date
Click For Summary

Homework Help Overview

The discussion revolves around calculating the kinetic energy of the slowest emitted photoelectron in the context of the photoelectric effect. Participants are exploring the relationship between photon energy, work function, and the resulting kinetic energy of emitted electrons.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are discussing the conditions under which the slowest emitted photoelectron would have zero kinetic energy, questioning the implications of this scenario on velocity. There is also a consideration of the spectrum of kinetic energies of emitted electrons.

Discussion Status

The discussion is examining different interpretations of the question regarding the slowest emitted photoelectron. Some participants have offered insights into the relationship between photon energy and the work function, while others are clarifying the wording of the original question.

Contextual Notes

There is a focus on the definitions of kinetic energy and velocity in the context of emitted photoelectrons, with participants questioning the assumptions related to the minimum kinetic energy and its implications.

kingyof2thejring
Messages
82
Reaction score
0
how do you calculate the kintetic energy of the slowest emitted photoelectron? i know how to calculate the KE of the fastest emitted photoelectron.
 
Physics news on Phys.org
?Not sure I get this

Surely there is a spectra of ke from 0 - ke.max, so the lowest possible ke = 0 which gives v=0?

- does v=0 count as slow or stopped?

What exactly is the wording of the question?
 
I assume you're talking about the photoelectric effect. The slowest emitted photoelectron is emitted with speed zero.
 
hf=work function of metal + 1/2mv2...slowest emitted electron would be when hf=work function metal so leaving zero kinetic energy for emitted electrons resulting in 0 velocity.
 

Similar threads

How Does Light Intensity and Frequency Affect Photoelectron Emission?
  • · Replies 5 ·
Replies
5
Views
2K
Speeds of the rolling ball at different points in this roller coaster track
  • · Replies 6 ·
Replies
6
Views
3K
Kinetic energy of a photoelectron
  • · Replies 2 ·
Replies
2
Views
1K
Use Max Planck's quantum theory to explain the following...
  • · Replies 4 ·
Replies
4
Views
4K
Rank the four objects from fastest to slowest
  • · Replies 3 ·
Replies
3
Views
3K
Photoelectric Effect: Find K.E. of Photoelectron in Air, Cs-137
  • · Replies 2 ·
Replies
2
Views
2K
Quantum Physics: Work Function and Electric Potential
  • · Replies 1 ·
Replies
1
Views
1K
True or False Questions on the Photoelectric Effect
  • · Replies 1 ·
Replies
1
Views
5K
Number of photoelectrons liberated
  • · Replies 4 ·
Replies
4
Views
2K
Help on KE of photoelectron emmision
  • · Replies 4 ·
Replies
4
Views
3K