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Giancoli 7th Edition textbook cover
Giancoli's Physics: Principles with Applications, 7th Edition
27
Early Quantum Theory and Models of the Atom
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27-1: Discovery of the Electron
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27-2: Blackbodies; Planck's Quantum Hypothesis
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27-3 and 27-4: Photons and the Photoelectric Effect
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27-5: Compton Effect
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27-6: Pair Production
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27-8: Wave Nature of Matter
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27-9: Electron Microscope
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27-11 and 27-12: Spectra and the Bohr Model
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Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 17
Q

What minimum frequency of light is needed to eject electrons from a metal whose work function is 4.8×10−19 J4.8 \times 10^{-19} \textrm{ J}?

A
7.2×1014 Hz7.2 \times 10^{14} \textrm{ Hz}
Giancoli 7th Edition, Chapter 27, Problem 17 solution video poster
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