photons of energy 4.21 eV are incident on sodium, what is the maximum kinetic energy of the ejected photoelectrons? The work function for sodium is 2.46 eV. Group of answer choices 0.744 eV 1.17 eV 1.75 eV

University Physics Volume 3
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ISBN:9781938168185
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Chapter6: Photons And Matter Waves
Section: Chapter Questions
Problem 70P: A 400-nm violet light ejects photoelectrons with a maximum kinetic energy of 0.860 eV from sodium...
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 photons of energy 4.21 eV are incident on sodium, what is the maximum kinetic energy of the ejected photoelectrons?

The work function for sodium is 2.46 eV.

Group of answer choices
0.744 eV
1.17 eV
1.75 eV
0.275 eV 
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