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Question
What is the smallest separation between two slits that will produce a second-order maximum for 720-nm red light?
Question by OpenStax is licensed under CC BY 4.0.
Final Answer
$1.44 \textrm{ }\mu\textrm{m}$
Solution Video

OpenStax College Physics Solution, Chapter 27, Problem 15 (Problems & Exercises) (1:13)

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