A double slit experiment is set up using a red 632nm laser, a spacing between the slits of .055mm, and a slit-to-screen distance of 2.5m. (a) What is the distance on the screen between the 4" bright fringe from the central maximum (count the central maximum as zero) and the center of the central maximum? (b) If the red laser is replaced with a laser of a different color and the 5th dark fringe of the new laser appears at the same location on the screen as the 4th bright fringe with the red laser (while the central maxima are in the same spot also), what is the wavelength of the new laser?

A double slit experiment is set up using a red 632nm laser, a spacing between the slits of .055mm, and a slit-to-screen distance of 2.5m. (a) What is the distance on the screen between the 4" bright fringe from the central maximum (count the central maximum as zero) and the center of the central maximum? (b) If the red laser is replaced with a laser of a different color and the 5th dark fringe of the new laser appears at the same location on the screen as the 4th bright fringe with the red laser (while the central maxima are in the same spot also), what is the wavelength of the new laser?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter35: Diffraction And Interference

Section: Chapter Questions

Problem 40PQ

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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 double slit experiment is set up using a red 632nm laser, a spacing between the slits of
.055mm, and a slit-to-screen distance of 2.5m.
(a) What is the distance on the screen between the 4 bright fringe from the central maximum
(count the central maximum as zero) and the center of the central maximum?
(b) If the red laser is replaced with a laser of a different color and the 5tn dark fringe of the new
laser appears at the same location on the screen as the 4" bright fringe with the red laser (while
the central maxima are in the same spot also), what is the wavelength of the new laser?

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