Question

concave lens cannot be used to remove far sightedness,why?​

Answer 1

Answer:

Concave Lenses Are for the Nearsighted, Convex for the Farsighted. ... Because the distance between the eye's lens and retina in nearsighted people is longer than it should be, such people are unable to make out distant objects clearly.

Explanation:

Answer 2

Answer:

Explanation:

it is because the focal length of long- sightedness is elongated which requires to be shortened for remedy but concave lens being diverging lens disperses the rays of light far from retina. so, concave lens cannot be used.