Question

if the far point of the eye 10M, then find the power of the lens required to correct the vision.

Answer 1

v in concave lens=-10 m
u=-infinity
​to find 1/ f=1/v-1/u
1/f=1/-10-1/-infinity
1/f=1/-10+1/infinity
1/f=1/-10+0                                                                                    1/infinity=0
1/f=1/-10
f=-0.1
p=1/f
=>p=1/-0.1
p=-10 D

Answer 2

u=∞ v=10

$p = \frac{1}{f} = \frac{1}{u} - \frac{1}{v}$

$\frac{1}{ - 10} = - 0.1diopter$

$hope \: it \: helped \: you$