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[" 11.Let "AB" be a chord of the circle ...

[" 11.Let "AB" be a chord of the circle "x^(2)+y^(2)=r^(2)" subtending a right angle at the centre.Then,the locus of the "],[" centroid of the "Delta PAB" as "P" moves on the circle is "],[[" (a) a parabola "," (b) a circle "],[" (c) an ellipse "," (d) a pair of straight lines "]]

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