When monochromatic light of an unknown wavelength falls on a sample of zinc, a minimum potential of 2.21 V is required to stop all of the ejected photoelectrons. (The work function for zinc is 4.31 eV. Determine the maximum speed (m/s) and wavelength (nm).

When monochromatic light of an unknown wavelength falls on a sample of zinc, a minimum potential of 2.21 V is required to stop all of the ejected photoelectrons. (The work function for zinc is 4.31 eV. Determine the maximum speed (m/s) and wavelength (nm).

Modern Physics

3rd Edition

ISBN:9781111794378

Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Chapter3: The Quantum Theroy Of Light

Section: Chapter Questions

Problem 16P

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Given:

work function for zinc, Φ = 4.31 eV

Stopping potential, V = 2.21 V

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