Question

a person with myopic eye cannot see object beyond 1.2 distinctly what is the focal length and power of his lens​

Answer 1

So, the person with a myopic eye which cannot see distant objects beyond 1.2 metre distinctly has an eyeball which is elongated in size. myopia can be corrected with the help of concave lens of appropriate focal length. Now, ... The myopic eye can be corrected by using a concave lens of power (-0.83) diopter.

Answer 2

the above answer is correct dued