The length of the common chord of the ellipse (x−1)29+(y−2)24=1 and the circle (x−1)2+(y−2)2=1 is:
A
No common chord
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B
1
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C
3
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D
8
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Solution
The correct option is C No common chord Clearly centre of the ellipse and the circle coincide and radius of the circle is 1. and length of semi-minor axis of the ellipse is 2.
Hence the given circle completely lie inside the ellipse, therefore will not be any common chord.