A beam of light consisting of wavelengths from460.0 nm to 640.0 nm is directed perpendicularly onto a diffractiongrating with 160 lines/mm. (a) What is the lowest order that isoverlapped by another order? (b) What is the highest order forwhich the complete wavelength range of the beam is present? Inthat highest order, at what angle does the light at wavelength (c)460.0 nm and (d) 640.0 nm appear? (e) What is the greatest angleat which the light at wavelength 460.0 nm appears?

A beam of light consisting of wavelengths from460.0 nm to 640.0 nm is directed perpendicularly onto a diffractiongrating with 160 lines/mm. (a) What is the lowest order that isoverlapped by another order? (b) What is the highest order forwhich the complete wavelength range of the beam is present? Inthat highest order, at what angle does the light at wavelength (c)460.0 nm and (d) 640.0 nm appear? (e) What is the greatest angleat which the light at wavelength 460.0 nm appears?

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter4: Diffraction

Section: Chapter Questions

Problem 85AP: A light ray of wavelength 461.9 nm emerges from a 2-mm circular aperture of a krypton ion laser. Due...

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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

A beam of light consisting of wavelengths from
460.0 nm to 640.0 nm is directed perpendicularly onto a diffraction
grating with 160 lines/mm. (a) What is the lowest order that is
overlapped by another order? (b) What is the highest order for
which the complete wavelength range of the beam is present? In
that highest order, at what angle does the light at wavelength (c)
460.0 nm and (d) 640.0 nm appear? (e) What is the greatest angle
at which the light at wavelength 460.0 nm appears?

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