MCQ
A unit vector perpendicular to the plane containing the vectors $\hat{i}-\hat{j}+\hat{k}$ and $-\hat{ i }+\hat{ j }+\hat{ k }$ is
- A$\frac{\hat{ i }-\hat{ j }}{\sqrt{2}}$
- B$\frac{\hat{ i }-\hat{ k }}{\sqrt{2}}$
- C$\frac{\hat{ j }-\hat{ k }}{\sqrt{2}}$
- D$\frac{\hat{i}+\hat{j}}{\sqrt{2}}$