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: 4

Answer

Please see the work below.

Work Step by Step

The dish receivers always use the concave side because the concave side brings the rays together at a point and collects the parallel rays coming from a geosynchronous satellite and focuses them at the focal point of the dish.
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