Question

A common type of bifocal lens consists of both concave and a convex lenses and it is used to correct presbyopia. In a
bifocal lens the
(a) upper portion is a convex lens which facilitates distant vision.
(b) lower portion is a convex lens which facilitates distant vision.
(c) lower portion is a convex lens which facilitates near vision.
(d) upper portion is a concave lens which facilitates near vision.​

Answer 1

Answer:

(c) is the correct option

as convex lens is used to correct short sightedness