Home › UP Board Class 10 › physics › Human Eye and the Colourful World › A myopic eye can be corrected by:
A myopic eye can be corrected by:
ANo lens
BConvex lens of suitable power
CCylindrical lens
DConcave lens of suitable power
Answer & Solution
Correct answer: D. Concave lens of suitable power
1. In myopia distant rays focus before the retina.
2. A concave (diverging) lens spreads rays apart slightly before they enter.
3. The eye then focuses these less convergent rays onto the retina.
4. The required power is negative.
5. So a concave lens of suitable focal length corrects myopia.
_Source: NCERT Class 10 Science Ch 11 'Human Eye and the Colourful World'_
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