Two identical microscope slides made of glass (n = 1.50) are stacked on top of each other. The slides are 8.00 cm long and are in contact at one end; at the other end they are separated by a piece of paper. You illuminate the slides from above with monochromatic light that has a wavelength in air of 565 nm. The spacing between the interference fringes seen by reflection is 1.30 mm. (a) Find the thickness of the piece of paper. (b) What would be the spacing between fringes if the space between the slides were filled with ethanol (n = 1.36) rather than air?

Two identical microscope slides made of glass (n = 1.50) are stacked on top of each other. The slides are 8.00 cm long and are in contact at one end; at the other end they are separated by a piece of paper. You illuminate the slides from above with monochromatic light that has a wavelength in air of 565 nm. The spacing between the interference fringes seen by reflection is 1.30 mm. (a) Find the thickness of the piece of paper. (b) What would be the spacing between fringes if the space between the slides were filled with ethanol (n = 1.36) rather than air?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter27: Wave Optics

Section: Chapter Questions

Problem 10OQ: A Fraunhofer diffraction pattern is produced on a screen located 1.00 m from a single slit. If 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.

Question

Two identical microscope slides made of glass (n = 1.50) are
stacked on top of each other. The slides are 8.00 cm long and are in contact
at one end; at the other end they are separated by a piece of paper.
You illuminate the slides from above with monochromatic light that has
a wavelength in air of 565 nm. The spacing between the interference
fringes seen by reflection is 1.30 mm. (a) Find the thickness of the piece
of paper. (b) What would be the spacing between fringes if the space
between the slides were filled with ethanol (n = 1.36) rather than air?

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