Long-sightedness can be corrected by using a _____ lens.
A
Concave
B
None of these
C
Diverging
D
Convex
Correct Option:
D
Explanation
Long-sightedness (hypermetropia) means nearby objects tend to form an image behind the retina because the eye's converging power is insufficient or the eyeball is too short. A convex or converging lens adds optical power and moves the image forward onto the retina. A concave lens is used for myopia.
