Multiple Choice Questions on The length of the normal from origin to the plane x 2y ndash 2z 9 is equal to ........ for NDA Exam Preparation

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Multiple Choice Questions

The length of the normal from origin to the plane x 2y ndash 2z 9 is equal to ........

Mathematics (NDA) Coordinate Geometry
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    The length of the normal from origin to the plane x = 2y – 2z = 9 is equal to

    2 units

    Incorrect Answer

    3 units

    Correct Answer

    4 units

    Incorrect Answer

    5 units

    Incorrect Answer
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    Explanation:

    x + 2y – 2z = 9
    => Length of normal =\frac{9}{\sqrt{1^{2}+2^{2}(-2)^{2}}}=3

    By: Munesh Kumari
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