Choose the one alternative that best completes the statement or answers the question. -A camera lens has a focal length of 50.0 mm and an aperture setting of f/4.00. What is

Choose the one alternative that best completes the statement or answers the question.
-A camera lens has a focal length of 50.0 mm and an aperture setting of f/4.00. What is the diameter of the aperture of this lens?
A) 200 mm
B) 12.5 mm
C) 25.0 mm
D) 35.4 mm
E) 10.1 mm

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