Locus of midpoints of chords of circle `x^2+y^2=r^2` having constant length `2l` is

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

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

Find the locus of the midpoint of the chords of circle x^(2)+y^(2)=a^(2) having fixed length l.

Find the locus of the midpoint of the chords of circle x^(2)+y^(2)=a^(2) having fixed length l.

Find the locus of the midpoint of the chords of circle x^(2)+y^(2)=a^(2) having fixed length l.

Find the locus of midpoint of chords of the circle x ^(2) + y ^(2) = r^(2) , substending a right angle at the point (a,b)

Locus of midpoint of chord of circle x^(2)+y^(2)=1 which subtend right angle at (2,-1) is