University Physics Volume 3
17th Edition
ISBN:9781938168185
Author:William Moebs, Jeff Sanny
Publisher:William Moebs, Jeff Sanny
Chapter4: Diffraction
Section: Chapter Questions
Problem 39P: When a monochromatic light of wavelength 430 nm incident on a double slit of slit separation 5 m,...
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Question
A monochromatic source of light of wavelength λ, is incident on a slit of width a. Obtain an expression to represent the angle of the 4th diffraction minimum.
Hint: Think about Huygens construction with the single slit divided into four equal length sections acting as sources of secondary waves.
Write down a general expression for the nth minimum angle. If λ =500 nm, a = 4 μm, determine the angle of the 2nd minimum.
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