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Area of the circle in which a chord of l...

Area of the circle in which a chord of length`sqrt2` makes an angle `pi/2 `at the centre,

A

`pi//2`

B

`2pi`

C

`pi`

D

`pi//4`

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The correct Answer is:
C
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OBJECTIVE RD SHARMA-CIRCLES-Exercise
  1. One of the diameters of the circle x^2+y^2-12x+4y+6=0 is given by

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  2. The length of the chord cut off by y=2x+1 from the circle x^2+y^...

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  3. Area of the circle in which a chord of lengthsqrt2 makes an angle pi/2...

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  4. The coordinates of the middle point of the chord cut-off by 2x-5y+18=0...

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  5. Find the equation of the circle which passes through the points (1,-2)...

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  6. If the lines 3x-4y-7 = 0 and 2x-3y-5=0 are two diameters of a circle o...

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  7. Equation of the circle with centre on the y-axis and passing through t...

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  8. If the lines a1x+b1y+c1=0 and a2x+b2y+c2=0 cut the coordinae axes at c...

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  9. If a circle passes through the points of intersection of the coordinat...

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  10. ABCD is a square in first quadrant whose side is a, taking AB and AD a...

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  11. If the points (2, 0), (0, 1), (4, 5)and (0, c) are concyclic, then th...

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  12. Find the point of intersection of the following pairs of lines: b x+a ...

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  13. Two perpendicular tangents to the circle x^2 + y^2= a^2 meet at P. The...

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  14. The equation of tangents drawn from the origin to the circlex^2+y^2-2r...

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  15. If from any point P on the circle x^2+y^2+2gx+2fy+c=0, tangents are dr...

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  16. If the equation of a given circle is x^2+y^2=36 , then the length of t...

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  17. Find the angle which the common chord of x^2+y^2-4x=0 and x^2+y^2=16 s...

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  18. Show that the equation of the circle passing through (1, 1) and the ...

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  19. The tangents to x^2+y^2=a^2 having inclinations alpha and beta interse...

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  20. Equation of a circle with centre(4,3) touching the circle x^2+y^2=1

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