Schaum's Outline of College Physics, Twelfth Edition (Schaum's Outlines)
Schaum's Outline of College Physics, Twelfth Edition (Schaum's Outlines)
12th Edition
ISBN: 9781259587399
Author: Eugene Hecht
Publisher: McGraw-Hill Education
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Chapter 39, Problem 16SP

A farsighted person who needs glasses can read without them when holding a text at 74 cm from the eye instead of the more usual 25 cm. If he or she puts on a pair of glasses having a dioptric power of 3.0 D, where will the new near point be? Discuss your answer. [Hint: Use Eq. (38.1) and remember that the image distance must be negative; here it’s –0.74 m. The object distance is then the near point in meters.]

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