What is the refractive (focusing) power for the following lenses:a. A converging lens with focal length = 20 cmb. A diverging lens with focal length of 50 cm.A person is nearsighted. Draw the rays for anobject far from your eye and show there theyform an image within the eye (no correctivelens)A person is farsighted. Draw the rays for anobject near your eye and show there theyform an image within the eye (no correctivelens)What type of corrective lens should be used forsomeone who is nearsighted?What type of corrective lens should be usedfor someone who is farsighted?Converging or Diverging?Converging or Diverging?Your friends contact lens prescription is -3.3 diopters. What is the focal length? Is your friendnear-sighted or far sighted?

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What is the refractive (focusing) power for the following lenses: a. A converging lens with focal length = 20 cm %3D b. A diverging lens with focal length of 50 cm.

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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Question

What is the refractive (focusing) power for the following lenses:
a. A converging lens with focal length = 20 cm
b. A diverging lens with focal length of 50 cm.
A person is nearsighted. Draw the rays for an
object far from your eye and show there they
form an image within the eye (no corrective
lens)
A person is farsighted. Draw the rays for an
object near your eye and show there they
form an image within the eye (no corrective
lens)
What type of corrective lens should be used for
someone who is nearsighted?
What type of corrective lens should be used
for someone who is farsighted?
Converging or Diverging?
Converging or Diverging?
Your friends contact lens prescription is -3.3 diopters. What is the focal length? Is your friend
near-sighted or far sighted?

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