A chord of parabola `y^(2)=4ax`subtends a right angle at the vertex The tangents at the extremities of chord intersect on

The normal chord of the parabola y^(2)=4ax subtends a right angle at the vertex.Then the length of chord is

A normal chord of the parabola y^(2)=4ax subtends a right angle at the vertex if its slope is

If a chord PQ of the parabola y^(2)=4ax subtends a right angle at the vertex,show that the locus of the point of intersection of the normals at P and Q is y^(2)=16a(x-6a)

A variable chord PQ of the parabola y=4x^(2) subtends a right angle at the vertex. Then the locus of points of intersection of the tangents at P and Q is

The normal chord of the parabola y^(2)=4ax subtends a right angle at the focus.Then the end point of the chord is