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When vec(A).vec(B)= -|A| |B|, then...

When `vec(A).vec(B)= -|A| |B|`, then

A

`vecA` and `vecB` are perpendicular to each other

B

`vecA` and `vecB` act in the same direction

C

`vecA` and `vecB` act in the opposite direction

D

`vecA` and `vecB` can act in any direction

Text Solution

Verified by Experts

The correct Answer is:
C
`vecA.vecB=ABcostheta`
In the problem `vecA.vecB=-AB`, i.e., `costheta=-1because theta=180^@`
i.e., `vecA` and `vecB` acts in the opposite direction.
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