Question

A student is unable to see clearly the words written on the black board placed at a distance of approximately 4m 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 1

HE IS SUFFERING FROM HYPERMETROPIA.

SEE RAY DIAGRAMS FROM BOOK AND CORRECTION ALSO.

IT IS CORRECTED BY USING CONVEX LENS OF SUITABLE POWER.

THANKS...

Answer 2

Answer:

defect of vision

Explanation:

night blindness