Question

Vector `vec(A)` is 2`cm` long and is `60^(@)` above the x-axis in the first quadrant. Vactor `vec(B)` is `2 cm` long and is `60^(@)` below the x-axis in the fourth quadrant. The sum `vec(A)+vec(B)` is a vector of magnitudes
A. 2`cm` along positive y-axis
B. 2`cm` along positive x-axis
C. 2`cm` along negative y-axis
D. 2`cm` along negative x-axis

Answer 1

Correct Answer - B
Here the angle between two vectors of equal magnitude is 120. So resultant has the same magnitude as either of the given vectors. Moreover, it is mid way between the two vectors, i.e., it is also x-axis.