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If a circle passes through (1,2) and cut...

If a circle passes through (1,2) and cuts `x^2+y^2=4`, orthogonally then the locus of the centre is

A

2x+4y-9=0

B

x+y+3=0

C

x+y-9=0

D

2x+3y=7

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The correct Answer is:
A
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AAKASH SERIES-SYSTEM OF CIRCLES-Exercise-II (Class work)
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  9. A circle passes through origin and has its centre on y = x. If it cuts...

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  11. The points A(2, 3) and B(-7, -12) are conjugate points w.r.t to the ci...

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  12. The locus of centres of all circles which touch the line x = 2a and cu...

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  13. If the circles of same radius 'a' and centres at (2, 3) and (5, 6) cut...

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  14. If the circle x^2 + y^2 + 2x - 2y + 4 = 0 cuts the circle x^2 + y^2 + ...

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  15. A line 'I' meets the circle x^2 + y^2 =61 in A, B and P(-5, 6) is such...

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  16. If P and Q are the Points of intersection of the circles x^2 + y^2 + 3...

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  17. From the point P(2, 3) tangents PA,PB are drawn to the circle x^2+y^2-...

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  18. The common chord of x^2 + y^2 - 4x - 4y = 0 and x^2 + y^2 = 16 substen...

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  20. The centres of the circles are (a, c) and (b, c) and their radical axi...

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