Question: If a typical eyeball is 2.00 cm long and has a pupil opening that can range from about 2.00 mm to 6.00 mm, what are

If a typical eyeball is 2.00 cm long and has a pupil opening that can range from about 2.00 mm to 6.00 mm, what are
(a) The focal length of the eye when it is focused on objects 1.00 m away,
(b) The smallest f -number of the eye when it is focused on objects 1.00 m away, and
(c) The largest f -number of the eye when it is focused on objects 1.00 m away?

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