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  3. CEE Kerala Engineering

CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2000

  • question_answer
    If\[\overrightarrow{a}\]is a constant vector, the equation\[(\overrightarrow{r}-\overrightarrow{a}).\overrightarrow{r}=0\]represents:

    A)  plane                                   

    B)  sphere

    C)  circle                    

    D)         straight line

    E)  parabola

    Correct Answer: B

    Solution :

    \[(\overrightarrow{r}-\overrightarrow{a}).\overrightarrow{r}\]represents a sphere.


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