Physics Technology Update (4th Edition)

Published by Pearson
ISBN 10: 0-32190-308-0
ISBN 13: 978-0-32190-308-2

Chapter 26 - Geometrical Optics - Problems and Conceptual Exercises - Page 941: 35

Answer

(a) $-1.9$ (b) inverted (c) $1.2m$

Work Step by Step

(a) We know that $m=\frac{-d_i}{d_{\circ}}$ We plug in the known values to obtain: $m=-\frac{3.5m}{1.8m}$ $m=-1.9$ (b) Since the magnification $m\lt 0$, the image formed is inverted. (c) As $\frac{1}{f}=\frac{1}{d_{\circ}}+\frac{1}{d_i}$ We plug in the known values to obtain: $\frac{1}{f}=\frac{1}{1.8m}+\frac{1}{3.5m}$ This simplifies to: $f=1.2m$
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