Question

A 14 years old student is not able to see clearly the questions written on the blackboard placed at the distance of 5m from him ? Give solution how the student see clearly

Answer 1

The student who can't see written on the board is suffering from Myopia.

The causes which cause Myopia are :Due to the high converging power of the eye lens. Due to Being Eye ball to long .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 .By using the concave lens the image is form on the Retina .

Answer 2

it is bcoz
the student having disease named hypermetropia
which is corrected by using spectacles containing convex lenses