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 18P

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Question

(a)

Determine the maximum kinetic energy (in eV) of the ejected photoelectrons.

(b)

Determine the maximum speed (in m/s) of the ejected photoelectrons.

m/s

(c)

Determine the wavelength in nm of the incident light.

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