MCQ
The relation between the vectors $A$ and $-2A$  is that,
  • A
    Both have same magnitude.
  • B
    Both have same direction.
  • They have opposite directions.
  • D
    None of the above.

Answer

Correct option: C.
They have opposite directions.
Multiplying a vector $A$ by a negative number $\lambda$ gives a vector $\lambda\text{A},$ whose directions opposite to the direction of $A$ and it's magnitude is $-\lambda$ times $|A|.$

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