When monochromatic light of an unknown wavelength falls on a sample of aluminum, a minimum potential of 2.45 V is required to stop all of the ejected photoelectrons. (The work function for aluminum is 4.08 eV.) (a) Determine the maximum kinetic energy (in eV) of the ejected photoelectrons. eV (b)
When monochromatic light of an unknown wavelength falls on a sample of aluminum, a minimum potential of 2.45 V is required to stop all of the ejected photoelectrons. (The work function for aluminum is 4.08 eV.) (a) Determine the maximum kinetic energy (in eV) of the ejected photoelectrons. eV (b)
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 20P
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When monochromatic light of an unknown wavelength falls on a sample of aluminum, a minimum potential of 2.45 V is required to stop all of the ejected photoelectrons. (The work function for aluminum is 4.08 eV.)
(a)
Determine the maximum kinetic energy (in eV) of the ejected photoelectrons.
eV
(b)
Determine the maximum speed (in m/s) of the ejected photoelectrons.
m/s
(c)
Determine the wavelength in nm of the incident light.
nm
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