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J & K CET Medical J & K - CET Medical Solved Paper-2008

  • question_answer
    \[\vec{A}\] is a vector with magnitude A, then the unit vector \[\vec{a}\]in the direction of vector \[\vec{A}\]is

    A)  \[A\,\vec{A}\]                                 

    B) \[\vec{A}\,\,\,\vec{A}\]

    C)  \[\vec{A}\times \vec{A}\]                                          

    D) \[\frac{\left| {\vec{A}} \right|}{A}\]

    Correct Answer: D

    Solution :

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


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