Defects of eye — task. Physics CBSE Live product, Class 10 (2026-27).

Choose the best answer for the given question from the options:

1. The presbyopia causes due to

(a) Elongation of eyeballs
(b) Gradual weakening of ciliary muscle
(c) Diminishing flexibility of eye lens
Both (b) and (c)

2. Which part of the bifocal lens helps in near vision?

Lower convex lens
Lower concave lens
Upper convex lens
Upper concave lens

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