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3.3 Multiple-Slit Interference
How adding more equally spaced slits sharpens the principal maxima and sets the locations and faint intensities of the secondary ones between them.
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2 exercises
3.3 Exercise 1
Ten narrow slits are equally spaced 0.25 mm apart and illuminated with yellow light of wavelength 580 nm. (a) What are the angular positions of the third and fourth principal maxima? (b) What is the separation of these maxima on a screen 2.0 m from the slits?
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3.3 Exercise 3
For a three-slit interference pattern, find the ratio of the peak intensities of a secondary maximum to a principal maximum.
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Adapted from University Physics Volume 3 © 2016 Rice University. Licensed under CC BY 4.0. Source: University Physics Volume 3. Imported at revision db44eb9.