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JEE Main & Advanced JEE Main Online Paper (Held On 23 April 2013)

  • question_answer
                    If the projections of a line segment of the \[x,y\]and z-axes in 3-dimensional  space are 2, 3 and 6 respectively, the length of the line segment  is:     JEE Main Online Paper ( Held On 23  April 2013 )

    A)                   12                                        

    B)                                          7

    C)                                          9                                           

    D)                                          6

    Correct Answer: B

    Solution :

                      Length of the line segment \[=\sqrt{{{(2)}^{2}}+{{(3)}^{2}}+{{(6)}^{2}}}=7\]


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