Question

the near point of hypermetropic eye is 50 cm . what is the nature and power of lens required

Answer 1

for a hypermetropic eye u=-25cm and v=-50cm
substituting in the lens formula we get focal length is f=50cm =0.5m
from the formula P=1/f
P=1/0.5  2D
so the power of the lens is 2 dioptre and the nature of lens is a converging lens or a convex lens

Answer 2

for a hypermetropic eye u=-25cm and v=-50cm

substituting in the lens formula we get focal length is f=50cm =0.5m

from the formula P=1/f

P=1/0.5  2D

so the power of the lens is 2 dioptre and the nature of lens is a converging lens or a convex lens