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What happens, when we multiply a vector ...

What happens, when we multiply a vector by `(-3)`

A

direction reverses and unit changes

B

direction reverses and magnitude is doubled

C

direction reverses unchanged and unit change

D

none of these

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ALLEN -BASIC MATHEMATICS USED IN PHYSICS &VECTORS -ADDITON & SUBTRACTION, MULTIPLICATION & DIVISION OF A VECTOR BY A SCALAR
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