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Question: 

Light of wavelength 620 nm falls on a slit that is $3.80 \times 10^{-3} \textrm{ mm}$ wide. Estimate how far the first bright diffraction fringe is from the strong central maximum if the screen is 10.0 m away.

Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014. Reprinted by permission of Pearson Education Inc., New York.
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Quick Answer: 

2.52 m

Giancoli 7th Edition, Chapter 24, Problem 28

(1:27)

Chapter 24, Problem 28 is solved.

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