3601

Physics Ray Optics Level: University

Suppose that the lens system (cornea + lens) in a particular eye has a focal  length that can very between 1.85 and 2.00 cm but the distance from the lens system to  the retina is only 1.90 cm (a) Is this eye nearsighted or farsighted? Explain. (b) What range of distances can the eye see clearly without corrective lenses?
(Assume that the normal near point is 25 cm)