1.

The equation to the locus of the midpoints of chords of the circle x^(2)+y^(2)=r^(2) having a constant length 2l is

Answer»

`X^(2)+y^(2)-L^(2)-r^(2)`
`x^(2)+y^(2)=r^(2)-l^(2)`
`x^(2)+y^(2)=4l^(2)`
`x^(2)+y^(2)=l^(2)+r^(2)`

ANSWER :B


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