CBSE 2026 · Region 3 · Set 2 · Q10 · 1 mark
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
From CBSE’s own marking scheme for this paper.
(B)
$\displaystyle 4$
Three Dimensional GeometryDirection Cosines and Direction Ratios of a LineApplymcqeasy
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CBSE Class 12 Mathematics past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.