(1) As one starts growing old, the lens of the eye hardens, loses its transparency and becomes opaque.
(2) Cataract is the major cause of blindness, which is also caused by a damage to the cornea.
(3) It obstructs the light rays from entering the eye.
(4) It occurs more often in old age.
Correct Answer: (a) 2, 4, 1, 3
Solution:दिये गये Jumbled sentences का उचित अनुक्रम विकल्प (a) 2, 4, 1, 3 है। शेष विकल्प असंगत हैं।