College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Question

Potassium and gold cathodes are used in a photoelectriceffect experiment. For each cathode, find:
a. The threshold frequency                      b. The threshold wavelength
c. The maximum electron ejection speed if the light has a
wavelength of 220 nm
d. The stopping potential if the wavelength is 220 nm

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