List of top Mathematics Questions on Vectors asked in KSEAB Class XII

The value of $\hat{i}\cdot\hat{i}+\hat{j}\cdot\hat{j}$ is
If $\vec{a}$ is a nonzero vector of magnitude $a$ and $\lambda$ is a nonzero scalar, then $\lambda \vec{a}$ is a unit vector if
The position vector of the midpoint of the line joining the points $P(2,3,4)$ and $Q(4,1,-2)$ is
The direction ratios of the $x$-axis are