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sider a typical red laser pointer with wavelength 649 nm. What is the light's frequency in hertz? (Recall the speed of ligh

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter39: Relativity

Section: Chapter Questions

Problem 59PQ

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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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Consider a typical red laser pointer with wavelength 649 nm.

What is the light's frequency in hertz? (Recall the speed of light c = 3.0 × 10⁸ m/s.)

f =

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