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 - Conceptual Questions - Page 938: 5

Answer

Please see the work below.

Work Step by Step

We know that for best results, the paper should be held at the focal length of the concave mirror because the light rays will converge on the small area of the paper and the heating effect would be the greatest at this point.
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