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J & K CET Engineering J and K - CET Engineering Solved Paper-2008

  • question_answer
    X is a vector with magnitude A, then the unit vector a in the direction of vector A is

    A)  \[A\,\vec{A}\]           

    B)  \[\vec{A}.\,\vec{A}\]

    C)  \[\vec{A}\times \,\vec{A}\]

    D)  \[\frac{|\vec{A}|}{A}\]

    Correct Answer: D

    Solution :

    Unit vector of \[\vec{A}\] is \[\hat{a}=\frac{{\vec{A}}}{|\vec{A}|}=\frac{|\vec{A}|}{A}\]


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