The radius of circle touching parabola `y^2 = x` at (1, 1) and having directrix of `y^2 = x` as its normal is

The radius of the circle touching the parabola y^2=x at (1, 1) and having the directrix of y^2=x as its normal is

The radius of the circle touching the parabola y^2=x at (1, 1) and having the directrix of y^2=x as its normal is (5sqrt(5))/8 (b) (10sqrt(5))/3 (5sqrt(5))/4 (d) none of these

The radius of the circle touching the parabola y^2=x at (1, 1) and having the directrix of y^2=x as its normal is (a)(5sqrt(5))/8 (b) (10sqrt(5))/3 (c)(5sqrt(5))/4 (d) none of these

The radius of the circle touching the parabola y^2=x at (1, 1) and having the directrix of y^2=x as its normal is (a)(5sqrt(5))/8 (b) (10sqrt(5))/3 (c)(5sqrt(5))/4 (d) none of these

Let the radius of the circle touching the parabola y^(2)=x at (1, 1) and having the directrix of y^(2)=x as its normal is equal to ksqrt5 units, then k is equal to

The radius of the circle touching the parabola y^(2)=x at (1,1) and having the directrix of y^(2)=x as its normal is (a)(5sqrt(5))/(8) (b) (10sqrt(5))/(3) (c) (5sqrt(5))/(4) (d) none of these

Let the radius of the circle touching the parabola y^(2)=x at (1, 1) and having the directrix of y^(2)=x at (1, 1) and having the directrix of y^(2)=x as its normal is equal to ksqrt5 units, then k is equal to

The equation of a circle which touches the line y = x at (1 , 1) and having y = x -3 as a normal, is

The equation of a circle which touches the line y = x at (1 , 1) and having y = x -3 as a normal, is