(a) Find the -number of a telescope with an objective diameter of 8.3 cm and a focal...

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(a) Find the ƒ-number of a telescope with an objective diameter of 8.3 cm and a focal length of 91 cm.
(b) Find the aperture diameter of an ƒ/1.2 all-sky meteor camera lens with a focal length of 2.5 mm.
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Physics

ISBN: 978-0321976444

5th edition

Authors: James S. Walker

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