Question: The eye is actually a multiple-lens system, but we can approximate it with a single-lens system for most of our purposes. When the eye is

The eye is actually a multiple-lens system, but we can approximate it with a single-lens system for most of our purposes. When the eye is focused on a distant object, the optical power of the equivalent single lens is +41.4 diopters.
(a) What is the effective focal length of the eye?
(b) How far in front of the retina is this "equivalent lens" located?

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