An array of 100 slits per millimetre is illuminated with light made up of a mixture of 3 wavelengths: a shade of violet, a shade of green and a shade of red. On a screen 2 meters away, we see the figure shown in the diagram below. Determine as precisely as possible the wavelength of each color.

An array of 100 slits per millimetre is illuminated with light made up of a mixture of 3 wavelengths: a shade of violet, a shade of green and a shade of red. On a screen 2 meters away, we see the figure shown in the diagram below. Determine as precisely as possible the wavelength of each color.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter26: Image Formation By Mirrors And Lenses

Section: Chapter Questions

Problem 9CQ

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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

I
T
15
I
0
5
10
15
| ||
Ve
=20
225
I
3-0
30
35 cm

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