JEE Main & Advanced Physics Vectors Question Bank Fundamentals of Vectors

  • question_answer If a particle moves from point P (2, 3, 5) to point Q (3,4,5). Its displacement vector be

    A)            \[\hat{i}+\hat{j}+10\hat{k}\]

    B)                                      \[\hat{i}+\hat{j}+5\hat{k}\]

    C)            \[\hat{i}+\hat{j}\]

    D)            \[2\hat{i}+4\hat{j}+6\hat{k}\]

    Correct Answer: C

    Solution :

                 Displacement vector \[\overrightarrow{r\,}=\Delta x\hat{i}+\Delta y\hat{j}+\Delta z\hat{k}\]            \[=(3-2)\hat{i}+(4-3)\hat{j}+(5-5)\hat{k}\]\[=\hat{i}+\hat{j}\]        

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