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JEE Main & Advanced Mathematics Circle and System of Circles Question Bank Chord of contact of tangent, Pole and Polar

  • question_answer
    The equation of polar of the point (1, 2)with respect to the circle \[{{x}^{2}}+{{y}^{2}}=7\], is       [RPET 1983, 84; MNR 1973]

    A)            \[x-2y-7=0\]                            

    B)            \[x+2y-7=0\]

    C)            \[x-2y=0\]                                

    D)            \[x+2y=0\]

    Correct Answer: B

    Solution :

               The required polar is \[x(1)+y(2)=7\] or\[x+2y=7\].


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