A child cannot read words on the blackboard clearly. The likely defect…

Question

A child cannot read words on the blackboard clearly. The likely defect and correction are:

Accepted Answer

A. Myopia — concave lens

1. Difficulty seeing distant objects → far point lies closer than infinity → myopia.
2. Myopia is corrected by a concave (diverging) lens of appropriate power.
3. The lens pushes the image back onto the retina.
_Source: syllabus Science, Ch 10 "The Human Eye and the Colourful World", §10.2_

Answer

Hypermetropia — convex lens

Answer

Presbyopia — bifocal lens

Answer

Cataract — surgery

A child cannot read words on the blackboard clearly. The likely defect and correction are:

Keep practising Refraction of Light and Lenses