A light beam of wavelength 560 nm falls normally on a glass wedge with refractive index 1.63. If the interference pattern contains 16 fringes per cm of the wedge length, calculate the angle of the wedge in seconds of an arc. Answer:

A light beam of wavelength 560 nm falls normally on a glass wedge with refractive index 1.63. If the interference pattern contains 16 fringes per cm of the wedge length, calculate the angle of the wedge in seconds of an arc. Answer:

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 44PQ

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Concept explainers

Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.

Question

A light beam of wavelength 560 nm falls normally on a glass wedge with
refractive index 1.63. If the interference pattern contains 16 fringes per cm of
the wedge length, calculate the angle of the wedge in seconds of an arc.
Answer:

What is the refraction index of the film of thickness 0,45 µm, if it appears blue
(480 nm) in white light?

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