3. The wavelength range of the visible spectrum is approximately 380 – 750 nm. Whitelight falls at normal incidence on a diffraction grating that has 350 slits/mm. find theangular width of the visible spectrum in (a) the first order and (b) third order.4. If the planes of a crystal are 3.50 Å (1 Å = 10¬1ºm) apart, what wavelength ofelectromagnetic waves is needed so that the first strong interference maximum in theBragg reflection occurs when the waves strike the planes at an angle of 22°, and inwhat part of the electromagnetic spectrum do these waves lie?

Answered: Image /qna-images/answer/00b145c6-ca07-42c7-b091-f86b7c4e8c91.jpg

3. The wavelength range of the visible spectrum is approximately 380 – 750 nm. White light falls at normal incidence on a diffraction grating that has 350 slits/mm. find the angular width of the visible spectrum in (a) the first order and (b) third order.

3. The wavelength range of the visible spectrum is approximately 380 – 750 nm. White light falls at normal incidence on a diffraction grating that has 350 slits/mm. find the angular width of the visible spectrum in (a) the first order and (b) third order.

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

Chapter27: Wave Optics

Section: Chapter Questions

Problem 62P

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Concept explainers

Diffraction of light

In physics, the term diffraction is defined as the bending of light around the corners of the obstacle. As a light ray passes by an aperture, it bends around the edges or through slits, it spreads out through a narrow opening. The diffracted light will produce fringes of bright and dark or colored bands which are labeled as a diffraction pattern.

Question

3. The wavelength range of the visible spectrum is approximately 380 – 750 nm. White
light falls at normal incidence on a diffraction grating that has 350 slits/mm. find the
angular width of the visible spectrum in (a) the first order and (b) third order.
4. If the planes of a crystal are 3.50 Å (1 Å = 10¬1ºm) apart, what wavelength of
electromagnetic waves is needed so that the first strong interference maximum in the
Bragg reflection occurs when the waves strike the planes at an angle of 22°, and in
what part of the electromagnetic spectrum do these waves lie?

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