A man requires reading glasses with +2.0 D power to read a book held 40.0 cm away
Question:
(a) What is his uncorrected far point?
(b) What refractive power lenses should he use for distance vision?
(c) His uncorrected near point is 1.0 m. What should the refractive powers of the two lenses in his bifocals be to give him clear vision from 25 cm to infinity?
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The refractive power of a lens is the reciprocal of the focal length ...View the full answer
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Related Book For 
Physics
ISBN: 978-0077339685
2nd edition
Authors: Alan Giambattista, Betty Richardson, Robert Richardson
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