Answered: The first-order line of 589-nm light…

The first-order line of 589-nm light falling on a diffraction grating is observed at a 14.5° angle. How far apart arethe slits? At what angle will the third order be observed?

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter4: Diffraction

Section: Chapter Questions

Problem 113AP: Structures on a bird feather act like a reflection grating having 8000 lines per centimeter. What is...

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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.

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The first-order line of 589-nm light falling on a diffraction grating is observed at a 14.5° angle. How far apart are
the slits? At what angle will the third order be observed?

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