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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
3 years 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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