Question

A person cannot read newspaper placed near by the 5075 from his eyes name the defect of vision he is suffering from draw a diagram to illustrate this defect list its two possible causes draw a ray diagram to show how this defect may be corrected using a lens of appropriate focal length

Answer 1

The person is suffering from the problem of Hypermetropia.

It is also called far sightedness.

Some of the basic reasons causing the problems are as follows:

• If When the focal length of the lens in the yes eyes increase extensively • The second reason is the decrease in the size of the eye ball.

• In order to correct the mistake, it is important to use the convex length lens of suitable focal length.

Answer 2

Since the newspaper is kept 5075 ( maybe metres) the person is suffering from farsightedness i.e hypermetropia. By using convex lens this defect can be corrected