Q. If $\overrightarrow{A} = \overrightarrow{B},$ then which of the following is not correct
A) $\widehat{A} = \widehat{B}$
B) $\widehat{A} \bullet \widehat{B} = AB$
C) $\left| \overrightarrow{A} \right| = \left| \overrightarrow{B} \right|$
D) $A\widehat{B\ }|\ |\ B\widehat{A}$
Explanation
(b) $\widehat{A} \bullet \widehat{B} = (1)(1)\cos 0{^\circ} = 1 \neq AB$.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.