Question

a person with a myopia cannot be seen Object beyond 1.2 m distinctly. what can be said about the likely size of his eyeBall? State the nature corrective lens that is needed to restore his proper vision?

Answer 1

The distance of far point x = 1.2 m

To view distant objects, concave lens of focal length -1.2 should be used.

i.e. f = -x = -1.2 m

Power of lens = 1/f = 1/(-1.2 m) = -0.83 D

To correct this defect of vision, he must use a concave lens. The concave lens will bring the image

back to the retina

Answer 2

your answer is in picture...

The concave lens will bring the image back to the retina