What type of lens is used to correct short-sightedness (myopia)?
A
Bifocal lens
B
Cylindrical lens
C
Concave lens
D
Convex lens
Correct Answer: Option C — Concave lens
Explanation:
A concave (diverging) lens is used to correct myopia or short-sightedness. This condition occurs when the eye focuses images in front of the retina, and a concave lens diverges light rays before they enter the eye, correcting the focus point.