4. In a diffraction pattern produced by a diffraction grating, red light (A= 700 nm)in the second order spectrum is deviated by 20 from the central bright fringe.(a) How many lines per centimeter does the grating nave? (b) f white lighnt willbe used, how many full visible spectra can be seen?

Slit spacing is given as d=mλsinθ ......(1)

4. In a diffraction pattern produced by a diffraction grating, red light (A= 700 nm) in the second order spectrum is deviated by 20 from the central briight fringe. (a) How many lines per centimeter does the grating have? (b) If white light will be used, how many full visible spectra can be seen?

4. In a diffraction pattern produced by a diffraction grating, red light (A= 700 nm) in the second order spectrum is deviated by 20 from the central briight fringe. (a) How many lines per centimeter does the grating have? (b) If white light will be used, how many full visible spectra can be seen?

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter24: Wave Optics

Section: Chapter Questions

Problem 47P: Sunlight is incident on a diffraction grating that has 2 750 lines/cm. The second-order spectrum...

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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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4. In a diffraction pattern produced by a diffraction grating, red light (A= 700 nm)
in the second order spectrum is deviated by 20 from the central bright fringe.
(a) How many lines per centimeter does the grating nave? (b) f white lighnt will
be used, how many full visible spectra can be seen?

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