Questions
A person’s near point is 50cm and his far point is 3m. Power of the lenses he requires for (i) Reading and (ii) seeing distant stars are
a
-2D and 0.33D
b
2D and -0.33D
c
-2D and 3D
d
2D and -3D
detailed solution
Correct option is B
a)1f=1v-1u=1-50-1-25=-1+250=150 P=100f=10050=+2D b)P=1f=1v-1u=1∞-13=-0.33DTalk to our academic expert!
Similar Questions
A man can see only between 75 cm and 200 cm. The power of lens to correct the near point will be
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