Multiple Choice
Which of the following has the most light-gathering power?
A) a telescope of 5 centimetres diameter and focal length of 50 centimetres
B) a telescope of 6 centimetres diameter and focal length of 100 centimetres
C) a telescope of 2 centimetres diameter and focal length of 100 centimetres
D) a telescope of 3 centimetres diameter and focal length of 75 centimetres
Correct Answer:
Verified
Correct Answer:
Verified
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