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Back to 29.2 The Photoelectric Effect

29.2 Exercise 20

Avg difficulty 2.5

A laser with a power output of 2.00 mW at a wavelength of 400 nm is projected onto calcium metal. (a) How many electrons per second are ejected? (b) What power is carried away by the electrons, given that the binding energy is 2.71 eV?

OpenStax College Physics 2e, 29.2 The Photoelectric Effect, exercise 20

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Adapted from College Physics © 2022 Rice University. Licensed under CC BY 4.0. Sources: College Physics 2e, College Physics for AP® Courses 2e. Imported at revision f98d7a7.