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1. |
A circle passes through the origin and has its centre on \[y=x\]. If it cuts \[{{x}^{2}}+{{y}^{2}}-4x-6y+10=0\] orthogonally, then the equation of the circle is [EAMCET 1994] |
A. | \[{{x}^{2}}+{{y}^{2}}-x-y=0\] |
B. | \[{{x}^{2}}+{{y}^{2}}-6x-4y=0\] |
C. | \[{{x}^{2}}+{{y}^{2}}-2x-2y=0\] |
D. | \[{{x}^{2}}+{{y}^{2}}+2x+2y=0\] |
Answer» D. \[{{x}^{2}}+{{y}^{2}}+2x+2y=0\] | |