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Question: 

Monochromatic light falling on two slits 0.018 mm apart produces the fifth-order bright fringe at an $8.6 ^\circ$ angle. What is the wavelength of the light used?

Source: Giancoli, Douglas C., Physics: Principles with Applications, 7th Edition, 2014.

Quick Answer: 

$0.54 \; \mu m$

Giancoli 7th Edition, Chapter 24, Problem 1

(0:51)

Chapter 24, Problem 1 is solved.

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