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The abscissae of two points A and B are ...

The abscissae of two points A and B are the roots of the equation `x^(2)+2ax-b^(2)=0` and their ordinate are the roots fo the equations `y^(2)+2py-q^(2)=0` then the radius of the circle with AB as diameter is

A

`sqrt(a^(2)+b^(2)+p^(2)+q^(2))`

B

`sqrt(a^(2)+p^(2))`

C

`sqrt(b^(2)+q^(2))`

D

`sqrt(a^(2)+b^(2)-p^(2)-q^(2))`

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The correct Answer is:
A
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AAKASH SERIES-CIRCLES-EXERCISE II
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  2. The equation of the circle passing through (2, 0) and (0, 4) and havin...

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  3. The abscissae of two points A and B are the roots of the equation x^(2...

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  4. If the circles described on the line joining the points (0,1) and (alp...

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  5. A rod AB of length 4 units moves horizontally with its left end A alwa...

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  6. A line segment AM=a moves in the XOY plane such that AM is parallel to...

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  7. Locus of centroid of the triangle whose vertices are (a cos ...

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  8. A circle of constant radius 3k passes through (0,0) and cuts the axes ...

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  9. A circle passes through origin and meets the axes at A and B so that (...

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  10. A rod PQ of length 2a sides with its ends on the axes the locus of the...

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  11. A line is at a distance c from origin and meets axes in A an dB. The l...

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  12. A right angled isosceles triangle is inscribed in the circle x^(2)+y^(...

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  13. If an equilateral triangle is inscribed in the circle x^(2)+y^(2)-6x-4...

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  14. The locus of the foot of the perpendicular drawn from orign to a varia...

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  15. A square is inscribed in the circlex^(2)+y^(2)-4x+6y-5=0 whose sides a...

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  16. A square is inscribed in the circel x^(2)+y^(2)-2x+7y-8=0 whose diagon...

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  17. The length of the tangent drawn to the circle x^(2)+y^(2)-2x+4y-11=0 f...

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  18. If (m(1),1//m(1)), i=1,2,3,4 are concyclic points, then the value of m...

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  19. The equation of the image of the circle x^(2)+y^(2)-6x-4y+12=0 by the ...

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  20. The area bounded by circles x^(2)+y^(2)=r^(2), r=1,2 and rays given by...

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