Camera Exposure: A 35-mm camera equipped with a 45-mm focal length lens is used to photograph a tree 15 m tall. If the aperture of the lens is set at f/2, what is the aperture diameter?

A. 23 mm
B. 14 mm
C. 18 mm
D. 27 mm
E. 31 mm


Answer: A

Physics & Space Science

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