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How do we know how many rays an object sends onto a lens?

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter2: Geometric Optics And Image Formation

Section: Chapter Questions

Problem 137AP: A nearsighted man cannot see objects clearly beyond 20 cm from his eyes. How close must he stand to...

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How do we know how many rays an object sends onto a lens?

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