Question

Let $\vec{\alpha }=2\hat{i}+3\hat{j}-\hat{k}$ and $\bar{\beta }=\hat{i}+\hat{j}.$ If $\vec{\gamma }$ is a unit vector, then the maximum value of $[\vec{\alpha }\times \vec{\beta }\vec{\beta }\times \bar{\gamma }\vec{\gamma }\times \vec{\alpha }]$ is equal to

• A. 2
• B. 3
• C. 4
• D. 9

Answer 1

Answer: (B)

Correct answer is (b) 3