If `A_1B_1` and `A_2B_2` are two focal chords of the parabola `y^2=4a x ,` then the chords `A_1A_2` and `B_1B_2` intersect on (a)directrix (b) axis (c)tangent at vertex (d) none of these

If a and c are lengths of segments of focal chord of the parabola y^(2)=2bx (b>0) then the a,b,c are in

If (x_(1),y_(1)) & (x_(2),y_(2)) are the extremities of the focal chord of parabola y^(2)=4ax then y_(1)y_(2)=

The length of a focal chord of the parabola y^(2) = 4ax at a distance b from the vertex is c. Then

The point (1,2) is one extremity of focal chord of parabola y^(2)=4x .The length of this focal chord is

If the length of a focal chord of the parabola y^(2)=4ax at a distance b from the vertex is c then prove that b^(2)c=4a^(3).

The length of a focin chord of the parabola y2=4ax making an angle with the axis of the parabola is (A)4a cos ec^(2)theta(C)a cos ec2(B)4a sec2 theta(D) none of these

If PSQ is a focal chord of the parabola y^(2)=8x such that SP=6, then the length of SQ is 6(b)4(c)3(d) none of these

The endpoints of two normal chords of a parabola are concyclic.Then the tangents at the feet of the normals will intersect (a) at tangent at vertex of the parabola (b) axis of the parabola (c) directrix of the parabola (d) none of these