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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 distinic points P and Q, then the line `5x+by-a=0` passes through P and Q for-

A

infinitely many vlaues of a

B

exactly two valus of a

C

exactly one value of a

D

no ral values of a

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The correct Answer is:
D
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CHHAYA PUBLICATION-MCQ's-QUESTION PAPER 5
  1. The image of the origin with reference to the line 4x+3y=25 is -

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  2. Lex x is even natural number less than 12, then domain of the relation...

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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...

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  4. The lines parallel ot the x-axis and passing through the intersection ...

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  5. The ratio in which the straight line joining points (3,5,-7) and (-2, ...

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  6. Which one of the following points is the nearest poit on the line 3x-4...

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  7. x+y=6 and x+2y=4 are two diameters of a circle. If the circel passes t...

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  8. If the distance between the directrices of a rectangular hyperbola is ...

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  9. The coorinates of the foci of the ellipse 9x^(2) +5y^(2) +30y =0 are-

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  10. Let f (x+(1)/(x))= x^(2) +(1)/(x^(2)) , x ne 0, then the value of f (x...

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  11. The range of the function ""^(7-x)P(x-3) is-

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  12. If the coordinates of one end of a focal chord of the parabola y^(2)=-...

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  13. If a focal chord of y ^(2)=16x is a tangent to (x-6)^(2) +y^(2) =2,. t...

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  14. If A={1,2,3,4,5}, B= {2,4,6}, C= {3,4,6} then (A uuB) nnC is-

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  15. The orbit of the earth around the sun is an ellipes with the sun at on...

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  16. In which of the following intervals two function f (x) =x and g(x) =+ ...

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  17. If A(n) ={ x:2 2+(1)/(n) le x le 10- (1)/(n), n =1,2,3…}. then the val...

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  18. If two sets A and B have 99 elements in common , then the number of el...

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  19. The range of the function f(x) =sin (sin ^(-1) x+cos ^(-1)x) (|x| le 1...

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  20. The value of lim(x to 0) (10^(x)-2^(x)-5^(x)+1)/(x log(1+x)) is -

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