Multiple Choice
A camera is used to photograph the full moon,which has an angular diameter of 0.53°.The image on the film is 2.3 mm in diameter.What is the focal length of the lens?
A) 2.3 mm
B) 500 mm
C) 250 mm
D) 790 mm
E) 25.5 mm
Correct Answer:
Verified
Correct Answer:
Verified
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