When $\vec A.\vec B = - |A||B|,$ then
When $\vec A.\vec B = - |A||B|,$ then
- 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
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- [AIPMT 2005]