# The far point of a myopic eye is 60 cm . What is the nature and power of lens required to correct the problem?

1
by tarakahuja123

2014-12-18T14:23:44+05:30

### This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Myopia means shortsightedness.  The person is not able to focus properly on distances more than 60 cm.  But he /she is able to focus properly up to 60cm.

the way of correcting this will be to  create a virtual image of distant objects (more than 60cm) at 60 cm from the eye.  Let us take an object very far from the eye.

Hence,  u = -infinity.        v = -60 cm.    f = ?

1/v - 1/u = 1/f
f = -60 cm.  So the lens is a concave lens or diverging lens.  of focal length 60cm or  0.60 meter.

power of lens is =  1 meter / (-0.60 meter) = - 1.667 Dioptres