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Question: 

A grating that has 3800 slits per cm produces a third-order fringe at a $22.0 ^\circ$ angle. What wavelength of light is being used?

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

Quick Answer: 

330 nm

Giancoli 7th Edition, Chapter 24, Problem 33

(0:49)

Chapter 24, Problem 33 is solved.

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