An office administrator realizes that she is having trouble doing her work due to eyesight problems. Her optometrist determines that without glasses she can focus clearly only on objects that lie at distances between 0.500 m and 4.00 m. The optometrist decides that the best way to handle her eyesight problems is to prescribe bifocals that will give her normal visual acuity from 25.0 cm out to infinity. After trying on several pairs of glasses frames, they agree that the glasses will be a distance of 2.20 cm from her eyes. (a) Determine the refractive power needed for the bifocal part that will correct for her nearsightedness (include the sign). What type of lens is needed? converging diverging (b) Determine the refractive power needed for the bifocal part that will correct for her farsightedness (include the sign).

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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An office administrator realizes that she is having trouble doing her work due to eyesight problems. Her optometrist determines
that without glasses she can focus clearly only on objects that lie at distances between 0.500 m and 4.00 m. The optometrist
decides that the best way to handle her eyesight problems is to prescribe bifocals that will give her normal visual acuity from
25.0 cm out to infinity. After trying on several pairs of glasses frames, they agree that the glasses will be a distance of 2.20 cm
from her eyes.
(a) Determine the refractive power needed for the bifocal part that will correct for her nearsightedness (include the sign).
What type of lens is needed?
converging
diverging
(b) Determine the refractive power needed for the bifocal part that will correct for her farsightedness (include the sign).
D
Transcribed Image Text:An office administrator realizes that she is having trouble doing her work due to eyesight problems. Her optometrist determines that without glasses she can focus clearly only on objects that lie at distances between 0.500 m and 4.00 m. The optometrist decides that the best way to handle her eyesight problems is to prescribe bifocals that will give her normal visual acuity from 25.0 cm out to infinity. After trying on several pairs of glasses frames, they agree that the glasses will be a distance of 2.20 cm from her eyes. (a) Determine the refractive power needed for the bifocal part that will correct for her nearsightedness (include the sign). What type of lens is needed? converging diverging (b) Determine the refractive power needed for the bifocal part that will correct for her farsightedness (include the sign). D
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