Question

a boy is unable to see black board placed at a distance of approx 5m.name the defect of vision the boy is suffering from​

Answer 1

Answer:

Human Eye and Colourful World

Since the student is not able to see distinctly the words written on the blackboard which is at a distance of approximately 4m from him, the student is suffering from myopia or near sightedness. A myopic eye has its far point nearer than infinity.

Explanation:

I copy it from Google

Answer 2

Answer:

The boy who can't see written on the board is suffering from Myopia. Due to the high converging power of the eye lens. ... It can be corrected by using a concave lens . Because concave lens reduces the high converfing power of lens because it is a diverging lens .