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Model Paper 1 — Maths STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceMathsModel Paper 11 Mark
MCQ
If the vectors $\vec{a}=\hat{i}+3 \hat{j}+\hat{k}, \vec{b}=2 \hat{i}-\hat{j}-\hat{k} $ and $\vec{c}=\lambda \hat{i}+7 \hat{j}+3 \hat{k}$ are coplanar then $\lambda=$ _________.
  • A
    $0$
  • B
    3
  • C
    $-3$
  • D
    5
✓

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