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Physics · 2026 · 1 mark
CBSE 2026 · Region 3 · Set 2 · Q5
A plano-convex lens, made of glass ( n =1 · 5) has a curved surface whose radius is 40 cm. The image formed of an object is of the same size as that…
A plano-convex lens, made of glass $\displaystyle (\mathrm{n}=1 \cdot 5)$ has a curved surface whose radius is $\displaystyle 40$ cm. The image formed of an object is of the same size as that of the object. The distance of the object from the lens is :
Official answer
(C)
$\displaystyle 160$ cm
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CBSE Class 12 Physics past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.