A convex lens of suitable focal length can correct man's eye problem of |
|||
(a) |
short sightedness |
(b) |
long sightedness |
(c) |
presbyopia |
(d) |
astigmatism |
A convex lens of suitable focal length can correct man's eye problem of |
|||
(a) |
short sightedness |
(b) |
long sightedness |
(c) |
presbyopia |
(d) |
astigmatism |