CBSE 2025 · Region 1 · Set 1 · Q14 · 1 mark
An old person is suffering from an eye defect caused by weakening of ciliary muscles and diminishing flexibility of the eye lens. If the defect of vision is 'a' which can be corrected by lens 'b', then 'a' and 'b' respectively are :
Official answer
From CBSE’s own marking scheme for this paper.
(B)
presbyopia and bifocal lens
The Human Eye and the Colourful WorldDefects of Vision and their CorrectionRemembermcqmedium
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CBSE Class 10 Science past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.