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WBJEE 2013 Math Solved Paper

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Question : 3

Total: 80

The locus of the midpoints of the chords of an ellpse x2 + 4y2 = 4 that are drawn form the positive end of the minor axis,is

a circle with centre (
1
2
,0) and radius 1
a parabola with focus (
1
2
,0) and directrix x = -1
an ellipse with centre (0,
1
2
) major axis 1 and minor axis
1
2
a hyperbola with centre (0,
1
2
), transverse axis 1 and conjugate axis
1
2
None of these

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