Can the resultant of two vectors be zero ?

Options

A. No
B. Yes, when the two vectors are equal in magnitude and direction
C. Yes, when the two vectors are equal in magnitude but opposite in direction
D. Yes, when the two vectors are equal in magnitude and making an anlge of `(2 pi)/(3)` with each other

Answer

C

Explanation

The resultant of two vectors can be zero if they have the same magnitude but they act in opposite directions. If `vec P + vec Q =0," then "vec P = -vec Q`
For this |P|=|Q| and they are oppositely directed.