Ncert Exercises & Solutions

It is found that \(|\vec{A}+\vec{B}|=|\vec{A}|\). This necessarily implies:

1.	\(\vec{B}=0\)
2.	\(\vec{A},\) \(\vec{B}\) are antiparallel
3.	\(\vec{A}\) and \(\vec{B}\) are perpendicular
4.	\(\vec{A}.\vec{B}\leq0\)