Question

35.
విధనుస్సు ఏర్పడుట
An old person is unable to see clearly nearby objects as well as distant objects.
To correct the vision. What kind of lens will he require ?
A) concave lens
B) Bifocal lens whose upper portion is concave lens and lower portion
is convex lens
C) convex lens
D) Bifocal lens whose upper portion is convex lens lower portion is
concave lens​

Answer 1

Answer:

Nearsightedness, or myopia, is the inability to see distant objects and is corrected with a diverging lens to reduce power. Farsightedness, or hyperopia, is the inability to see close objects and is corrected with a converging lens to increase power.