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far-sightedness cannot be corrected by the use of a concare lens why

far-sightedness cannot be corrected by the use of a concare lens why 
 

Grade:10

1 Answers

Harshit Singh
askIITians Faculty 5963 Points
one year ago
Dear Student

Convex lenses are used in eyeglasses for correcting farsightedness, where the distance between the eye's lens and retina is too short, as a result of which the focal point lies behind the retina. Eyeglasses with convex lenses increase refraction, and accordingly reduce the focal length.

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