A very thin sheet of plastic(n=1.60) covers one slitof a double-slit apparatus illuminated by 680-nm light. Thecenter point on the screen, instead of being a maximum, isdark. What is the (minimum) thickness of the plastic?

A very thin sheet of plastic(n=1.60) covers one slitof a double-slit apparatus illuminated by 680-nm light. Thecenter point on the screen, instead of being a maximum, isdark. What is the (minimum) thickness of the plastic?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter36: Applications Of The Wave Model

Section: Chapter Questions

Problem 26PQ

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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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A very thin sheet of plastic(n=1.60) covers one slit
of a double-slit apparatus illuminated by 680-nm light. The
center point on the screen, instead of being a maximum, is
dark. What is the (minimum) thickness of the plastic?

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