A flat observation screen is placed at a distance of 4.5 m froma pair of slits. The separation on the screen between the central brightfringe and the fi rst-order bright fringe is 0.037 m. The light illuminatingthe slits has a wavelength of 490 nm. Determine the slit separation.

A flat observation screen is placed at a distance of 4.5 m froma pair of slits. The separation on the screen between the central brightfringe and the fi rst-order bright fringe is 0.037 m. The light illuminatingthe slits has a wavelength of 490 nm. Determine the slit separation.

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter4: Diffraction

Section: Chapter Questions

Problem 27P: If the separation between the first and the second minima of a single-slit diffraction pattern is...

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Concept explainers

Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.

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A flat observation screen is placed at a distance of 4.5 m from
a pair of slits. The separation on the screen between the central bright
fringe and the fi rst-order bright fringe is 0.037 m. The light illuminating
the slits has a wavelength of 490 nm. Determine the slit separation.

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