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Mathematics · 2025 · 1 mark
CBSE 2025 · Region 4 · Set 3 · Q5
In the adjoining figure, AC is diameter of larger circle with centre O. AB is tangent to smaller circle with centre O. If OD =r, then BC is equal to:
In the adjoining figure, AC is diameter of larger circle with centre $\displaystyle \mathrm{O} . \mathrm{AB}$ is tangent to smaller circle with centre O. If $\displaystyle \mathrm{OD}=r$, then BC is equal to :
Official answer
(C)
$\displaystyle 2 r$
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CBSE Class 10 Mathematics past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.