The photoelectric work function of potassium is 2 eV. What potential difference would be applied between a potassium surface and the electron in order to just prevent the collection of electrons when the surface is illuminated by 350

The photoelectric work function of potassium is 2 eV. What potential difference would be applied between a potassium surface and the electron in order to just prevent the collection of electrons when the surface is illuminated by 350

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter6: Photons And Matter Waves

Section: Chapter Questions

Problem 66P: The work function for potassium is 2.26 eV. What is the cutoff frequency when this metal is used as...

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Question

The photoelectric work function
of potassium is 2 ev. What
potential difference would be
applied between a potassium
surface and the electron in
order to just prevent the
collection of electrons when the
surface is illuminated by 350
nm?
A. 154 V
B. 0.154 V
C. 1.54 V
D. 15.4 V

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