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Science · 2026 · 2 marks
CBSE 2026 · Region 5 · Set 1 · Q34
(A) (i) How does the change in curvature of the eye lens helps us in the process of seeing the nearby objects clearly? (ii) State the range of the…
(A)(i)
How does the change in curvature of the eye lens helps us in the process of seeing the nearby objects clearly?
(ii)
State the range of the power of accommodation of a normal human eye.
OR
(B)
Draw a ray diagram to show the correction of eye defect of an old man who can not see an object placed closer than $\displaystyle 1$ m from his eye, clearly.
Marking-scheme solution
(A)(i)
While looking at objects nearer to eye, the curvature of the eye lens increases. Consequently, the focal length of the eye lens decreases.
(ii)
From 25cm (near point) to infinity (far point)
OR
(B)
PAGI
(Deduct $\displaystyle \frac{1}{2}$ mark for no
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CBSE Class 10 Science past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.