Multiple Choice
A small refracting "spyglass" telescope has an objective lens with a diameter of 2 inches.The world's largest refracting telescope at Yerkes Observatory has an objective lens with a diameter of 40 inches.Assuming that all light striking the objectives passes through them,how much larger is the light-gathering power of Yerkes than that of the spyglass?
A) twice
B) 40 times
C) 80 times
D) 400 times
Correct Answer:
Verified
Correct Answer:
Verified
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