Suppose a monochromatic light incident on a single slit produces a diffraction pattern. (a) How would the pattern differ if you decrease the wavelength of the light by half? (b) How would the pattern differ if you tripled both the wavelength and slit width at the same time?

Suppose a monochromatic light incident on a single slit produces a diffraction pattern. (a) How would the pattern differ if you decrease the wavelength of the light by half? (b) How would the pattern differ if you tripled both the wavelength and slit width at the same time?

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter4: Diffraction

Section: Chapter Questions

Problem 90AP: A monochromatic light of unknown wavelength is incident on a slit of width 20 m. A diffraction...

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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.

Question

Suppose a monochromatic light incident on a single slit produces a diffraction pattern.

(a) How would the pattern differ if you decrease the wavelength of the light by half?

(b) How would the pattern differ if you tripled both the wavelength and slit width at the same time?

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