Physics Technology Update (4th Edition)

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

Chapter 27 - Optical Instruments - Problems and Conceptual Exercises - Page 972: 66

Answer

Please see the work below.

Work Step by Step

We know that the angular magnification is the ratio between the focal length of the objective lens and the focal length of the eye piece. The angular magnification for both the telescopes is the same and it is given that the length of one telescope is greater than the other. Thus, we conclude that the focal lengths of the eye piece and objective lens are greater in longer telescope.
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