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Mathematics · 2024 · 1 mark
CBSE 2024 · Region 4 · Set 2 · Q14
A vector perpendicular to the line r = i + j - k +λ(3 i - j ) is:
A vector perpendicular to the line $\displaystyle \vec{r}=\hat{\mathrm{i}}+\hat{\mathrm{j}}-\hat{\mathrm{k}}+\lambda(3 \hat{\mathrm{i}}-\hat{\mathrm{j}})$ is :
Official answer
(B)
$\displaystyle \hat{\mathrm{i}}+3 \hat{\mathrm{j}}+5 \hat{\mathrm{k}}$
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