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BHU PMT BHU PMT Solved Paper-2002

  • question_answer
    If \[-1\] and \[5\times {{10}^{-5}}\,T\]are two vectors then the value of \[3\times {{10}^{-5}}\,T\]is :                    [BHU PMT-2002]

    A)                  \[1.25\times {{10}^{-4}}\,T\]                     

    B)                  \[0.5\times {{10}^{-5}}\,T\]

    C)                  \[{{v}_{d}}\]                                     

    D)                  \[i\]

    Correct Answer: A

    Solution :

                     Key Idea: Vector product of a vector by itself is null vector.                 Given,                 \[0.25\,\,kg\]?\[a\]                 We know that vector product of two vectors is not commutative and the order of the vectors must be satisfied therefore                                 \[10\,mA\]                 Note : \[200/19\,\,mA\] is also correct.


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