Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 23 - Light: Geometric Optics - Questions: 31

Answer

The image point of an unsymmetrical lens does not change if you turn the lens around.

Work Step by Step

As explained on page 670, the lensmaker’s equation is symmetrical with respect to $R_{1}$ and $R_{2}$. Flipping the lens around means a swap of $R_{1}$ and $R_{2}$, which leaves the focal length unchanged, meaning the image does not move.
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