Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Chapter 32, Problem 74P
(a)
To determine
The near point of the person at age 45.
(b)
To determine
The near point of person at age 55.
(c)
To determine
The power of lens required when the person is at age of 55.
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A person with a near point of 85 cm, but excellent distant vision, normally wears corrective glasses. But he loses them while traveling. Fortunately, he has his old pair as a spare. (a) If the lenses of the old pair have a power of +2.25 diopters, what is his near point (measured from his eye) when he is wearing the old glasses if they rest 2.0 cm in front of his eye? (b) What would his near point be if his old glasses were contact lenses with the same power instead?
A person struggles to read by holding a book at arm's length, a distance of 41 cm away. What power of reading glasses should be prescribed for her, assuming they will be placed 2.1 cm from the eye and she wants to read at the "normal" near point of 25 cm.
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Chapter 32 Solutions
Physics for Scientists and Engineers
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