CBSE 2025 · Region 2 · Set 3 · Q12 · 1 mark
If projection of $\displaystyle \vec{a}=\alpha \hat{i}+\hat{j}+4 \hat{k}$ on $\displaystyle \vec{b}=2 \hat{i}+6 \hat{j}+3 \hat{k}$ is $\displaystyle 4$ units, then $\displaystyle \alpha$ is
Official answer
From CBSE’s own marking scheme for this paper.
(D)
$\displaystyle 5$
Vector AlgebraProduct of Two VectorsApplymcqmedium
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CBSE Class 12 Mathematics past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.