Q. Consider a vector $\overrightarrow{F} = 4\widehat{i} - 3\widehat{j}$. Another vector that is perpendicular to $\overrightarrow{F}$ is
A) $4\widehat{i} + 3\widehat{j}$
B) 6$\widehat{j}$
C) 7$\widehat{j}$
D) $3\widehat{i} - 4\widehat{j}$
Explanation
(b) Since $\overrightarrow{F} = 4\widehat{i} - 3\widehat{j}$ is lying in $X - Y$ plane, hence the vector perpendicular to $\ \overrightarrow{F}$ must be lying perpendicular to$X - Y$ plane $ie,$ along $Z$-axis.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.