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JEE Main & Advanced Mathematics Vector Algebra Question Bank Modulus of vector Algebra of vectors

  • question_answer
    If O is origin and C is the mid-point of \[A(2,\,\,-1)\] and \[B(-4,\,3)\]. Then  value of \[\overrightarrow{OC}\] is                      [RPET 2001]

    A) i + j       

    B) i ? j

    C) i + j       

    D) i ? j

    Correct Answer: C

    Solution :

    Co-ordinate of C is \[\left( \frac{2-4}{2},\,\frac{-1+3}{2} \right)=(-1,\,1)\]                              \[\therefore \overrightarrow{OC}=-\mathbf{i}+\mathbf{j}\].


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