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If vec(A) + vec(B) = vec(R ) and 2 vec(A...

If `vec(A) + vec(B) = vec(R ) and 2 vec(A) + vec(B)` is perpendicular to `vec(B)` then

A

A = R

B

B = 2R

C

B = R

D

B = A

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The correct Answer is:
A
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