Answered: The work function of a certain material…

The work function of a certain material is 4.9 eV. What is the photoelectric minimum (threshold) frequency for this material?

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter27: Quantum Physics

Section: Chapter Questions

Problem 45AP

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Concept explainers

Wien's displacement law

Students often get confused between Wien's displacement law and Planck's radiation law. Although both are historically related, yet they are conceptually different. Planck's law helps determine the spectrum of a blackbody, while Wien's law determines the relationship between peak wavelength and temperature.

Question

The work function of a certain material is 4.9 eV. What is the photoelectric minimum (threshold) frequency for this material?
A. 1.18 x 10¹⁵ Hz
B. 2.23 x 10¹⁵ Hz
C. 9.01 x 10¹⁴ Hz
D. 3.48 x 10¹⁵ Hz
E. 2.56 x 10¹⁵ Hz

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