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29.6 Exercise 3

Avg difficulty 2.5

In a Davisson-Germer type of experiment, a crystal with a parallel-plane separation (d) of 9.1 × 10–2 nm produces constructive interference with an electron beam at an angle of θ = 50°. Which of the following is the maximum de Broglie wavelength for these electrons?

  1. 0.07nm
  2. 0.09 nm
  3. 0.14 nm
  4. 0.21 nm

OpenStax College Physics 2e, 29.6 The Wave Nature of Matter, exercise 3

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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.