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Mathematics · 2026 · 1 mark
CBSE 2026 · Region 3 · Set 2 · Q10
Direction ratios of lines l_1 and l_2 respectively are <1,-2,3> and <-2, p,-6>. The value of p for which l_1 ∥ l_2, is:
Direction ratios of lines $\displaystyle l_{1}$ and $\displaystyle l_{2}$ respectively are $\displaystyle <1,-2,3>$ and $\displaystyle <-2, \mathrm{p},-6>$. The value of p for which $\displaystyle l_{1} \| l_{2}$, is :
Official answer
(B)
$\displaystyle 4$
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