Name the defect of vision which can be corrected by a converging lens. Show clearly by a ray diagram how the lens corrects the defect.

Convex lens is used for correcting hypermetropia.

(a) Person suffering from hypermetropia, the image of the object placed nearby will form behind the retina.

(b) N’ is the near point of hypermetropic eye which is farther away from the normal near point N.

(c) Convex lens is used for correcting hypermetropia and a virtual image of the object is formed at the near point of the eye.