Determine Planck's Constant from gradient

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SUMMARY

The discussion centers on determining Planck's Constant (h) using the gradient of a graph depicting the photoelectric effect, specifically plotting Stopping Voltage (V) against Frequency (Hz). The relevant equation for this analysis is derived from the photoelectric effect, which relates the stopping voltage to the frequency of incident light. Participants emphasize the necessity of applying the equation to extract the value of Planck's Constant from the slope of the graph.

PREREQUISITES
  • Understanding of the photoelectric effect and its equations
  • Knowledge of graph interpretation, specifically linear relationships
  • Familiarity with basic physics concepts such as kinetic energy of electrons
  • Ability to perform calculations involving gradients and slopes
NEXT STEPS
  • Research the photoelectric effect equation: E = hf - eV
  • Learn how to calculate the gradient of a linear graph
  • Explore the relationship between stopping voltage and light frequency
  • Study the implications of Planck's Constant in quantum mechanics
USEFUL FOR

Students studying physics, particularly those focusing on quantum mechanics and the photoelectric effect, as well as educators seeking to clarify concepts related to Planck's Constant and its determination.

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Homework Statement



Determine Planck's Constant from gradient

Homework Equations





The Attempt at a Solution



I have a graph entitled "Photoelectric effect: stopping voltage as a function of light frequency"

The y-axis is the Stopping Voltage (V), the x-axis the Frequency (Hz).

How do I determine Planck's Constant (h) from the gradient?

Thanks!
 
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What is the kinetic energy of a photo-emitted electron?
 
ZedCar said:

Homework Equations

Why is your "Relevant equations" section blank? It is a photoelectric effect problem, look up the equation that describes the photoelectric effect.
 

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