question_answer

A student is unable to see clearly the words written on the blackboard placed at a distance of approximately 4 m from him. Name the defect of vision the boy is suffering from. Explain the method of correcting this defect. Draw ray diagram for the:

(i) defect of vision and also

(ii) for its correction.

Answer:

The boy is suffering from myopia or near sightedness and it can be corrected by using a concave lens of suitable power.

The required ray diagrams are given below:

(i)

(ii)                                                           Correction of Myopia