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How wide must a narrow slit be if the first diffraction minimum occurs at ±12° with laser light of 633 nm?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter36: Applications Of The Wave Model

Section: Chapter Questions

Problem 31PQ: A light source emits a mixture of wavelengths from 450.0 nm to 600.0 nm. When the light passes...

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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

How wide must a narrow slit be if the first diffraction minimum occurs at ±12° with laser light of 633
nm?
O 6x 10-6 m
О Зх 10-5 m
O 1.5 x 10-6 m
ОЗх 10-6 m
О 6x 10-5 m

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