Three discrete spectral lines occur at angles of 10.1°, 13.7°, and 14.8°, respectively, in the first - order spectrum of a diffraction - grating spectrometer. (a) If the grating has 3 660 slits/cm, what are the wavelengths of the light? (b) At what angles are these lines found in the second - order spectra?

Three discrete spectral lines occur at angles of 10.1°, 13.7°, and 14.8°, respectively, in the first - order spectrum of a diffraction - grating spectrometer. (a) If the grating has 3 660 slits/cm, what are the wavelengths of the light? (b) At what angles are these lines found in the second - order spectra?

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter4: Diffraction

Section: Chapter Questions

Problem 23P: Consider a single-slit diffraction pattern for =589 nm, projected on a screen that is 1.00 m from a...

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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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Three discrete spectral lines occur at angles of 10.1°, 13.7°, and 14.8°, respectively, in the first - order spectrum of a diffraction -
grating spectrometer. (a) If the grating has 3 660 slits/cm, what are the wavelengths of the light? (b) At what angles are these lines found in the second - order spectra?

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