Suppose the interference pattern shown in the figure below is produced by monochromatic light passing through a diffraction grating, that has 100 lines/mm, and onto a screen 1.75 m away. What is the wavelength of light if the distance between the dashed lines is 48.8 cm?

Suppose the interference pattern shown in the figure below is produced by monochromatic light passing through a diffraction grating, that has 100 lines/mm, and onto a screen 1.75 m away. What is the wavelength of light if the distance between the dashed lines is 48.8 cm?

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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