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Mathematics · 2023 · 1 mark
CBSE 2023 · Region 1 · Set 1 · Q8
The value of p for which the vectors 2 i +p j + k and -4 i -6 j +26 k are perpendicular to each other, is:
The value of $\displaystyle p$ for which the vectors $\displaystyle 2 \hat{i}+p \hat{j}+\hat{k}$ and $\displaystyle -4 \hat{i}-6 \hat{j}+26 \hat{k}$ are perpendicular to each other, is :
Official answer
(A)
$\displaystyle 3$
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