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If the circles : x^2+ y^2+2ax + cy +a=0 ...

If the circles : `x^2+ y^2+2ax + cy +a=0` and `x^2+ y^2-3ax+dy -1=0` intersect in two distinct points P and Q, then the line 5x + by- a = 0 passes through P and Q for:

A

no value of a

B

exactly one value of a

C

exactly two values of a

D

infinitely many values of a.

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MODERN PUBLICATION-CONIC SECTIONS-EXERCISE
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  3. If the circles : x^2+ y^2+2ax + cy +a=0 and x^2+ y^2-3ax+dy -1=0 inter...

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  13. Let C be the circle with centre (0, 0) and radius 3 units. The equatio...

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  14. The locus of the vertices of the family of parabolas y=(a^3x^2)/3+(a^2...

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  15. Angle between the tangents to the curve y=x^2-5x+6 at the points (2,0)...

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  16. The axis of a parabola is along the line y=x and the distance of its v...

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  17. The equation of the common tangents to the parabola y = x^2 and y=- (x...

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  18. Let a hyperbola passes through the focus of the ellipse (x^(2))/(25)-(...

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  19. If one of the lines of my^2+(1-m^2) xy-mx^2=0 is a bisector of the ang...

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