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If one of the circles: x^2+y^2 +2ax+c=0...

If one of the circles: `x^2+y^2 +2ax+c=0` and `x^2+y^2 + 2bx+c=0` lies within the other , then :

A

ab gt 0, c lt 0

B

ab gt 0, c gt 0

C

ab lt 0 , c gt 0

D

None of these

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The correct Answer is:
B
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MODERN PUBLICATION-CIRCLES AND SYSTEMS OF CIRCLES -MCQs LEVEL - II
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  3. If one of the circles: x^2+y^2 +2ax+c=0 and x^2+y^2 + 2bx+c=0 lies wi...

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  5. The equation of the four circles are (x pm a)^2 + (y pm a)^2 = a^2. Th...

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  6. The circles : x^2+y^2 +2g1x-a^2 =0 and x^2+y^2 +2g2x-a^2=0 cut each ot...

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  7. If the circle x^2+y^2+2gx+2fy+c=0 bisects the circumference of the cir...

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  8. Let AB be a chord of the circle x^2+y^2=a^2 subtending a right angle ...

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  9. Locus of centroid of the triangle whose vertices are (a cos t, a sin t...

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  11. If a circle passes through the point (a, b) and cuts the circle x^2+y^...

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  13. If the lines 3x - 4y - 7 = 0 and 2x - 3y - 5 = 0 are two diameters of ...

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  14. Let 'C' be the circle with centre (0,0 ) and radius 3 units. The equat...

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  15. Let ABCD be a quadrilateral with area 18, with side AB parallel to the...

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  16. Consider a family of circles which are passing through the point (-1, ...

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  17. The point diametrically opposite to the point P (1, 0) on the circle x...

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  18. If P and Q are the points of intersection of the circles x^2+y^2+3x+7y...

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