Question:medium
If \( \vec{a} \) and \( \vec{b}=3\hat{i}+6\hat{j}+6\hat{k} \) are collinear and \( \vec{a}\cdot\vec{b}=27 \), then \( \vec{a} \) is
If \( \vec{a} \) and \( \vec{b}=3\hat{i}+6\hat{j}+6\hat{k} \) are collinear and \( \vec{a}\cdot\vec{b}=27 \), then \( \vec{a} \) is
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Collinear vectors are scalar multiples.
Updated On: May 1, 2026
- \( 3(\hat{i}+\hat{j}+\hat{k}) \)
- \( \hat{i}+2\hat{j}+2\hat{k} \)
- \( 2\hat{i}+2\hat{j}+2\hat{k} \)
- \( \hat{i}+3\hat{j}+3\hat{k} \)
- \( \hat{i}-3\hat{j}+2\hat{k} \)
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The Correct Option is C
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