\(\vec{A}\) is a vector quantity such that |\(\vec{A}\)| = non - zero constant. Which of the following expression is true for \(\vec{A}\) ?
1
\(\vec{A}\) . \(\vec{A}\) = 0
2
\(\vec{A}\) × \(\vec{A}\) < 0
3
\(\vec{A}\) × \(\vec{A}\) = 0
4
\(\vec{A}\) × \(\vec{A}\) > 0