23_Chapter 25 HomeworkCH25 Optical Instruments

23_Chapter 25 HomeworkCH25 Optical Instruments - Optical...

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Optical Instruments 359 (b) When the object distance is 33.0 cm p = , the corrective lens should produce parallel rays ( ) q . Then the implanted lens will focus the final image on the retina. From the thin lens equation, the required focal length is 33.0 cm f p = = , and the power of this lens should be 1 1 s 0.330 m = = = P 3.03 diopter + corrective f 25.52 When viewed from a distance of 50 meters, the angular length of a mouse (assumed to have an actual length of ) is 10 cm 3 2.0 10 = × 0.10 m radians 50 m s r θ = = Thus, the limiting angle of resolution of the eye of the hawk must be
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