alleryWhich defect of vision is corrected by a concave lens?
AHypermetropia (long-sightedness)
BMyopia (short-sightedness)
CPresbyopia
DAstigmatism
Answer & Solution
Correct answer: B. Myopia (short-sightedness)
1. Myopia means the eye can focus only on nearby objects.
2. Distant rays form an image before the retina.
3. A concave (diverging) lens spreads the rays before they enter the eye.
4. The image then forms on the retina.
5. So myopia is corrected by a concave lens.
_Source: syllabus Science Ch 11 'Human Eye and the Colourful World'_
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