A student has difficulty in reading his textbooks but can read the blackboard clearly while sitting in the…
A student has difficulty in reading his textbooks but can read the blackboard clearly while sitting in the last row. Name the defect of vision the student is suffering from. List two reasons due to which this defect arises. Write the nature of the lenses required to correct this defect.
Solution
(a) Hypermetropia /Farsightedness/Longsightedness.
Reasons:
(i) Focal length of the eye lens is too long
(ii) Eyeball becomes too small.
Correction
Convex lens /Converging lens