The component of vector X along the direction of vector Y is zero when
A
X and Y are in opposite directions to each other
B
X is at an angle of 45° to Y
C
X is perpendicular to Y
D
X and Y are parallel to each other
Verified Correct Answer: C.
Physical Principles & Numerical Solution
When two vectors are perpendicular, the angle between them is 90 degrees, resulting in the component of one vector along the direction of the other being zero.
Source: Myschool Past Questions Archive (Record #13883)