What Is the Maximum Kinetic Energy of an Electron in the Photoelectric Effect?

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Homework Help Overview

The discussion revolves around the photoelectric effect, specifically focusing on the maximum kinetic energy of an electron related to the threshold wavelength of silver, which is stated as 2762 Ångströms. Participants are exploring the implications of the threshold wavelength in the context of the photoelectric effect.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are questioning the meaning of "threshold wavelength" and its significance in the photoelectric effect. There are attempts to clarify what is needed to calculate the maximum kinetic energy, with some suggesting that additional information, such as incident frequency or wavelength, is necessary. Others are probing the relationship between threshold wavelength and work function.

Discussion Status

The discussion is ongoing, with participants actively seeking clarification on key terms and concepts. Some guidance has been offered regarding the need for a complete problem statement and the relationship between threshold wavelength and work function, but no consensus has been reached on how to proceed with the calculations.

Contextual Notes

There is an indication that the original poster may not have provided the complete problem statement, leading to confusion about the necessary information for solving the question. Participants are also noting the importance of understanding the definitions involved in the photoelectric effect.

INAM KHAN
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Homework Statement


The photo electric effect threshold wavelength of silver is 2762A(angstrum)

Homework Equations



Calculate the maximum kinetic energy of electron?

The Attempt at a Solution


since no work function then how can I slove this? Is this be sloved by E=hv-Φ?
 
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What does "photoelectric effect threshold wavelength" mean?
 
threshold wavelength means minimum wavelength.
 
begging the question... minimum wavelength for what?
What does "photoelectric effect minimum wavelength" mean?

What is it about this wavelength that makes it the minimum for this (whatever "this" may be, you havn't said) to happen?
 
The question do not have enough information to answer the question . we need incident frequency or wavelength of light to calculate the kinetic energy .
Threshold wavelength means the maximum wavelength that should be in incident on the metal so that electron will eject. Threshold frequency is the minimum frequency that should be incident on the metal surface to eject electrons .
 
@Nikhil faraday : the idea was that the person whose homework it is should answer the question "what does threshold wavelength mean?" etc. Since understanding what that term means is basically what the homework is about, we shouldn't really say directly.
Clearly OP has not written the entire problem in the "problem statement" section of post #1... probably the entire question is not there.
However, the answer can still be expressed as an equation.

@INAM KHAN : can you relate the threshold wavelength to the work function? It should be in your notes - or look up "photoelectric effect".
(Aside: did you write the entire question in post #1)
 
I am really sorry for that.
Simon Bridge said:
@Nikhil faraday : the idea was that the person whose homework it is should answer the question "what does threshold wavelength mean?" etc. Since understanding what that term means is basically what the homework is about, we shouldn't really say directly.
 
Nikhil faraday said:
I am really sorry for that.
No harm - let's see how OP responds.
 

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