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JEE Main & Advanced Sample Paper JEE Main Sample Paper-32

  • question_answer
    Distance from origin to the image of the point \[2\hat{i}-3\hat{j}+3\hat{k}\] in the plane  \[\overrightarrow{r}.(\hat{i}-2\hat{j}-\hat{k})+1=0\]is    

    A) \[4\]                     

    B)    \[\sqrt{17}\]              

    C) \[\sqrt{18}\]                      

    D) \[\sqrt{26}\]

    Correct Answer: D

    Solution :

    Image (0, 1, 5)                 \[\therefore \] distance from origin is \[\sqrt{26}\]


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