Refracting Telescope: 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


Answer: D

Physics & Space Science

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