JEE Main & Advanced Physics Vectors Question Bank Topic Test - Vectors

  • question_answer
    Given \[\vec{A}\,=\hat{i}+\hat{j}\,+\hat{k}\] and \[\vec{B}\,=-\hat{i}-\hat{j}-\hat{k},\,(\vec{A}-\vec{B})\] will make angle with \[\vec{A}\] as

    A) \[0{}^\circ \]

    B) \[{{180}^{o}}\]          

    C) \[90{}^\circ \]

    D) \[60{}^\circ \]

    Correct Answer: A

    Solution :

    [a] \[\vec{A}-\vec{B}\,=2\hat{i}+\,2\hat{j}+2\hat{k}=2\vec{A}\]


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