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JEE Main & Advanced Sample Paper JEE Main - Mock Test - 25

  • question_answer
    The value of A: such that\[\frac{x-4}{1}=\frac{y-2}{1}=\frac{z-k}{2}\] lies in the plane \[2x-4y+z=7\], is

    A) 7                     

    B) -7

    C) No real value    

    D) 4

    Correct Answer: A

    Solution :

    [a] : The given line passes through (4, 2, k). Now, the line will lie in the plane \[2x-4y+z=7,\] if the point \[(4,2,k)\]lies on the plane. \[\therefore \]\[2\times 4-4\times 2+k=7\Rightarrow k=7\]


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