Answered: a) by ight? (b) Give a diagram showing…

a) by ight? (b) Give a diagram showing clearly how coherent sources are produced in a biprism. Derive the formula for the fringe width in the biprism experiment.

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter4: Diffraction

Section: Chapter Questions

Problem 40P: Determine the intensities of two interference peaks other than the central peak in the central...

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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

Only ques b

(a) What is meant by interference of light? Discuss the conditions for interference.
(b) Give a diagram showing clearly how coherent sources are produced in a biprism. Derive
the formula for the fringe width in the biprism experiment.
(c) Newton's rings are observed in reflected light of wavelength 5.9 x 10$ cm. The diameter
of the 10th dark ring is 0.4 cm. Find the radius of curvature of the lens.

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