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27.7 Exercise 1

Avg difficulty 2.5

Which of the following best describes the cause of thin film interference?

  1. Light reflecting from a medium having an index of refraction less than that of the medium in which it is traveling.
  2. Light reflecting from a medium having an index of refraction greater than that of the medium in which it is traveling.
  3. Light changing its wavelength and speed after reflection.
  4. Light reflecting from the top and bottom surfaces of a film.

OpenStax College Physics 2e, 27.7 Thin Film Interference, exercise 1

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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.