Answer
$m=0.5$
Work Step by Step
Using the relation for magnification of $$m=-\frac{i}{p}$$ and substituting known values of $i=-10cm$ and $p=20cm$ yields $$m=-\frac{-10cm}{20cm}=0.5$$
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 1039: 19f
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