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JCECE Engineering JCECE Engineering Solved Paper-2003

  • question_answer
    If \[A\] and \[B\] are two fixed point and \[P\] is a variable point such that\[PA+PB=4\], then the locus of \[P\] is a/an:

    A)  parabola            

    B)  ellipse

    C)   hyperbola        

    D)   none of these

    Correct Answer: B

    Solution :

    Key Idea: We know, the sum of focal distance of any point on the ellipse, always equal to the length of the major axis. \[\therefore \]If \[A\] and \[B\] are two fixed point and \[P\] is any variable point, such that \[PA+PB=4\], then the locus of \[P\] is an ellipse.


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