Answer
$m=-2$
Work Step by Step
To find magnification, use the equation for magnification, which is $$m=-\frac{i}{p}$$ So, by substituting values of $i=30cm$ and $p=+15cm$ yields a magnification of $$m=-\frac{30cm}{15cm}=-2$$
Fundamentals of Physics Extended (10th Edition)
by Halliday, David; Resnick, Robert; Walker, Jearl
Published by
Wiley
ISBN 10:
1-11823-072-8
ISBN 13:
978-1-11823-072-5
Chapter 34 - Images - Problems - Page 1038: 10c
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