Question

the for point of a myopic person is 80 cm in front of the eye . what is the nature and power of the lens required to correct the problem ?​

Answer 1

Answer:

The nature and the power of lens required to enable him to see very distant objects clearly is concave lens with -1.25 D. Explanation: For person affected with myopic condition, the image instead of forming on retina, it forms in front of it. In order to cure such type of defect, concave lens is used.

Answer 2

Answer:

To correct the myopia the person concerned should use concave lens of focal length (f) = -80 cm = -0.80 m

Power of lens (P) = 1/f(m) = 1/-0.80 = 100/-80 =

-1.25 D.