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Three coplanar vectrors `vec(A), vec(B)` and `vec(C)` have magnitudes `4, 3` and `2` respectively. If the angle any two vector is `120^(@)` then which of the following vector may be equal to `(3vec(A))/4+vec(B)/3+vec(C)/2` A. B. C. D. |
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Answer» Correct Answer - B As `|vec(B)/3|=|vec(C)/2|` so `vec(B)/3+vec(C)/2=-vec(A)/4` therefore `(3vec(A))/4+vec(B)/3+vec(C)/2=vec(A)/2` |
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