Multiple Choice
By what factor is the light-gathering power of the 10-m diameter Keck telescope on Mauna Kea in Hawaii greater than an average unaided human eye, with a typical aperture diameter of 5 mm?
A) 2.5 × 105 times
B) 2 × 104 times
C) 2000 times
D) 4 × 106 times
Correct Answer:
Verified
Correct Answer:
Verified
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