The circles \[{{x}^{2}}+{{y}^{2}}+4x+6y+3=0\] and \[2({{x}^{2}}+{{y}^{2}})+6x+4y+C=0\] will cut orthogonally, if C equals [Kurukshetra CEE 1996]

The circles \[{{x}^{2}}+{{y}^{2}}+4x+6y+3=0\] and \[2({{x}^{2}}+{{y}^{

1.	The circles \[{{x}^{2}}+{{y}^{2}}+4x+6y+3=0\] and \[2({{x}^{2}}+{{y}^{2}})+6x+4y+C=0\] will cut orthogonally, if C equals [Kurukshetra CEE 1996]
A.	4
B.	18
C.	12
D.	16
Answer» C. 12

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The circles \[{{x}^{2}}+{{y}^{2}}+4x+6y+3=0\] and \[2({{x}^{2}}+{{y}^{2}})+6x+4y+C=0\] will cut orthogonally, if C equals [Kurukshetra CEE 1996]

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