If $\left| {{{\vec v}_1} + {{\vec v}_2}} \right| = \left| {{{\vec v}_1} - {{\vec v}_2}} \right|$ and ${{{\vec v}_1}}$ and ${{{\vec v}_2}}$ are finite, then
${{{\vec v}_1}}$ is parallel to ${{{\vec v}_2}}$
${{{\vec v}_1} = {{\vec v}_2}}$
$\left| {{{\vec v}_1}} \right| = \left| {{{\vec v}_2}} \right|$
${{{\vec v}_1}}$ and ${{{\vec v}_2}}$ are mutually perpendicular
If $\overrightarrow A = 4\hat i - 3\hat j$ and $\overrightarrow B = 6\hat i + 8\hat j$ then magnitude and direction of $\overrightarrow A \, + \overrightarrow B $ will be
If $\vec{P}+\vec{Q}=\overrightarrow{0}$, then which of the following is necessarily true?
The two vectors $\vec A = -2\widehat i + \widehat j + 3\widehat k$ and $\vec B = 7\widehat i + 5\widehat j + 3\widehat k$ are :-
The resultant of $\overrightarrow P $ and $\overrightarrow Q $ is perpendicular to $\overrightarrow P $. What is the angle between $\overrightarrow P $ and $\overrightarrow Q $
The vectors $\vec{A}$ and $\vec{B}$ are such that
$|\vec{A}+\vec{B}|=|\vec{A}-\vec{B}|$
The angle between the two vectors is