Question

the far point of myopia person is 10 cm find power of the lens required to far objects in Dioptres
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Answer 1

Answer:

The person is suffering from myopia and hence need a concave lens to correct the defect. The lens should be such that an object at infinity must form its image at the far point.

Hence, f=−80 cm=−0.8 m

The power of the lens can be obtained as:

P=

f

1

P=

(−0.8)

1

=−1.25 D