Light of wavelength of 550nm is incident perpendicularly on a diffraction grating. The angle between the two first-order diffraction maxima on opposite sides of the zeroth-order maximum is 20°. What is the grating spacing?

Light of wavelength of 550nm is incident perpendicularly on a diffraction grating. The angle between the two first-order diffraction maxima on opposite sides of the zeroth-order maximum is 20°. What is the grating spacing?

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter4: Diffraction

Section: Chapter Questions

Problem 38P: A monochromatic light of wavelength 589 nm incident on a double slit with slit width 2.5 m and...

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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

Light of wavelength of 550nm is incident perpendicularly on a
diffraction grating. The angle between the two first-order diffraction
maxima on opposite sides of the zeroth-order maximum is 20°.
What is the grating spacing?

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