Multiple Choice
Many amateur astronomers have telescopes with mirrors 20 cm (1/5 m) in diameter. In comparison, one of the largest astronomical telescopes in the world is the Keck telescope, with a diameter of 10 m. How much greater is the light-gathering power of the Keck telescope than the power of a 20-cm telescope?
A) 50 times greater
B) 7 times greater
C) 125,000 times greater
D) 2500 times greater
Correct Answer:
Verified
Correct Answer:
Verified
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