Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. When green light from amercury lamp (λ=546.1 nm) is used, a stopping potential of 0.874 V reduces the photocurrent to zero.(a) Based on this measurement, what is the work function for this metal?eV(b) What stopping potential would be observed when using light from a red lamp (2 = 652.0 nm)?V

The wavelength of incident light is…

Answered: = 546.1 nm) is used, a stopping…

= 546.1 nm) is used, a stopping potential of 0.874 V reduces the ph I on this measurement, what is the work function for this metal? ev

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter28: Quantum Physics

Section: Chapter Questions

Problem 15P

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Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. When green light from a
mercury lamp (λ
=
546.1 nm) is used, a stopping potential of 0.874 V reduces the photocurrent to zero.
(a) Based on this measurement, what is the work function for this metal?
eV
(b) What stopping potential would be observed when using light from a red lamp (2 = 652.0 nm)?
V

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