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The equation (x-alpha)^2+(y-beta)^2=k(l...

The equation `(x-alpha)^2+(y-beta)^2=k(lx+my+n)^2` represents

A

a parabola for `k = (l^(2) +m^(2))^(-1)`

B

an elipse for `0 lt k lt (l^(2) + m^(2)) ^(-1)`

C

a hyperbola for `k gt (l ^(1) +m^(2)) ^(-1)

D

a point circle for `k=0.`

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The correct Answer is:
A, B, C, D
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FIITJEE-MATHEMATICS -MCQ (MULTIPLE CORRECT)
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