A child sitting in a classroom is not able to read clearly the writing on the blackboard

A child sitting in a classroom is not able to read clearly the writing on the blackboard.
(a) Name the type of defect from which his eye is suffering.
(b) With the help of a ray diagram show how this
defect can be remedied.

(a) The child’s eye is suffering from the defect of myopia. „
(b) The defect can be removed by using a concave lens as shown in the figure below: