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Mathematics · 2025 · 1 mark
CBSE 2025 · Region 1 · Set 1 · Q2
If vector a =3 i +2 j - k and vector b = i - j + k, then which of the following is correct?
If vector $\displaystyle \overrightarrow{\mathrm{a}}=3 \hat{\mathrm{i}}+2 \hat{\mathrm{j}}-\hat{\mathrm{k}}$ and vector $\displaystyle \overrightarrow{\mathrm{b}}=\hat{\mathrm{i}}-\hat{\mathrm{j}}+\hat{\mathrm{k}}$, then which of the following is correct?
Official answer
(B)
$\displaystyle \overrightarrow{\mathrm{a}} \perp \overrightarrow{\mathrm{b}}$
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