Condition that the two lines represented by the equation \[a{{x}^{2}}+2hxy+b{{y}^{2}}=0\]to be perpendicular is [Kurukshetra CEE 1998; MP PET 2001]

Condition that the two lines represented by the equation \[a{{x}^{2}

1.	Condition that the two lines represented by the equation \[a{{x}^{2}}+2hxy+b{{y}^{2}}=0\]to be perpendicular is [Kurukshetra CEE 1998; MP PET 2001]
A.	\[ab=-1\]
B.	\[a=-b\]
C.	\[a=b\]
D.	\[ab=1\]
Answer» C. \[a=b\]

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Condition that the two lines represented by the equation \[a{{x}^{2}}+2hxy+b{{y}^{2}}=0\]to be perpendicular is [Kurukshetra CEE 1998; MP PET 2001]

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