Fundamentals of Physics Extended (10th Edition)

Published by Wiley
ISBN 10: 1-11823-072-8
ISBN 13: 978-1-11823-072-5

Chapter 34 - Images - Problems - Page 1039: 35d

Answer

$i = -26~cm$

Work Step by Step

We can find $i$: $\frac{n_1}{p}+\frac{n_2}{i} = \frac{n_2-n_1}{r}$ $\frac{n_2}{i} = \frac{n_2-n_1}{r} - \frac{n_1}{p}$ $\frac{1.0}{i} = \frac{1.0-1.5}{30~cm} - \frac{1.5}{70~cm}$ $\frac{1.0}{i} = -\frac{0.5}{30~cm} - \frac{1.5}{70~cm}$ $\frac{1.0}{i} = -\frac{3.5}{210~cm} - \frac{4.5}{210~cm}$ $\frac{1.0}{i} = -\frac{8.0}{210~cm}$ $\frac{i}{1.0} = -\frac{210~cm}{8.0}$ $i = -26~cm$
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