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Chapter 35, Problem 24EAP

A scientist needs to focus a helium-neon laser beam ( λ = 633 nm) to a 10- μ m-diameter spot 8.0 cm behind a lens.

a. What focal-length lens should she use?

b. What minimum diameter must the lens have?

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Chapter 35 Solutions

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics, Books a la Carte Edition; Student Workbook for Physics for Scientists ... eText -- ValuePack Access Card (4th Edition)

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Convex and Concave Lenses; Author: Manocha Academy;https://www.youtube.com/watch?v=CJ6aB5ULqa0;License: Standard YouTube License, CC-BY