Question Text
Question 2 :
Assertion: $\vec A \times \vec B$ is perpendicular to both $\vec A + \vec B$ as well as $\vec A -\vec B$
Reason: $\vec A +\vec B$ as wll as $\vec A -\vec B$ lie in the plane containing $\vec A$ and $\vec B$, but $\vec A \times \vec B$ lies perpendicular to the plane containing $\vec A $ and $\vec B$
Question 3 :
$\vec A$ and $\vec B$ are vectors, and $\theta$ is the angle between them. What can you do to maximize $\vec A \cdot \vec B$ ?<br/>I. Maximize the magnitude of A<br/>II. Maximize the magnitude of B<br/>III. Set to $90^o$
Question 4 :
If a vector $2\hat{i}+3\hat{j}+8\hat{k}$ is perpendicular to the vector $4\hat{j}-4\hat{i}+\alpha \hat{k}$, then the value of $\alpha$
Question 5 :
The magnitude of resultant of two equal forces is double the magnitude of either of forces. The angle between them is:
Question 6 :
$\vec A \times \vec B$ = $\vec B \times \vec A,$ then the angle between $\vec A$ and $\vec B$ is
