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JEEMAIN and NEET
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JEEMAIN PAST PAPERS
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1999
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Q)
If $\overrightarrow{a} = -\hat{i} + 2 \hat{j} + 3 \hat{k},\;\overrightarrow{b} = \hat{i}-2\hat{j}+\hat{k}, \; \overrightarrow{c} = 4 \hat{i} - 3 \hat{j} - 2 \hat{k}$ and $\overrightarrow{a} + \lambda \overrightarrow{b}$ is perpendicular to $\overrightarrow{c}$, then $\lambda$ is equal to :
( A ) 3
( B ) 1
( C ) 2
( D ) 4
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