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Question: 

A nearsighted person has near and far points of 10.6 and 20.0 cm, respectively. If she puts on contact lenses with power P = -4.00 D, what are her new near and far points?

Source: Giancoli, Douglas C., Physics: Principles with Applications, 7th Edition, 2014.

Quick Answer: 

near point: 18.4 cm, far point: 1.00 m

Giancoli 7th Edition, Chapter 25, Problem 21

(1:52)

Chapter 25, Problem 21 is solved.

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