When `vecA.vecB=-|A||B|`, then

Options

A. `vec(A) and vec(B)` are perpendicular to each other
B. `vec(A) and vec(B)` act in the same direction
C. `vec(A) and vec(B)` act in the opposite direction
D. `vec(A) and vec(B)` can act in any direction

Answer

C

Explanation

Since, `vec(A).vec(B)= AB cos theta= - |vec(A)| |vec(B)|`
`rArr cos 180^(@)= -1 rArr theta= 180^(@)`