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Cal Is Viewing the Moon with His New Telescope,using a 10-Mm

Question 34

Multiple Choice

Cal is viewing the Moon with his new telescope,using a 10-mm focal length eyepiece.For greater detail,he wishes to double the magnification of his telescope.An eyepiece having which one of the following characteristics will accomplish this for him?


A) 40 diopters
B) 8 mm
C) 12 mm
D) 200 diopters
E) 5 diopters

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