Question

the far point of myopia person is 10 cm find power of the lens required to far objects in D​

Answer 1

Explanation:

Defect is Myopia means eye has problem in seeing far objects and thus concave lens is required for correction to shifts its far point from 1.5m to ∞. That means image of the object at infinty must be formed at 1.5m for the eye to view properly.

Since from the lens formula,

v

1

−

u

1

=

f

1

u=−∞,v=−1.5m

On solving, power of the lens required P=

f

1

=−0.66D