Compared with a large telescope mirror, a large telescope lens a. is easier to support against sag

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Compared with a large telescope mirror, a large telescope lens
a. is easier to support against sag
b. does not disperse light
c. can provide higher magnification
d. has no advantages

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The Physical Universe

ISBN: 978-0077862619

16th edition

Authors: Konrad B Krauskopf, Arthur Beiser

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