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J & K CET Engineering J and K - CET Engineering Solved Paper-2005

  • question_answer
    The   distance   between   the   planes \[2x+y+2z=8\]and \[4x+2y+4z+5=0\]

    A)  \[3/2\]          

    B)  \[7/2\]

    C)  \[2/5\]          

    D)  \[0\]

    Correct Answer: B

    Solution :

    Distance between the plane \[4x+2y+4z-16=0\] and \[4x+2y+4z+5=0\] is \[d=\frac{|5+16|}{\sqrt{16+4+16}}=\frac{|21|}{\sqrt{36}}=\frac{21}{6}=\frac{7}{2}\]


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