Number of focal chords of the parabola `y^(2)=9x` whose length is less than 9 is

If t is the parameter for one end of a focal chord of the parabola y^(2)=4ax, then its length is

If t is the parameter for one end of a focal chord of the parabola y^(2)=4ax, then its length is :

If t is the parameter of one end of a focal chord of the parabola y^(2) = 4ax , show that the length of this focal chord is (t + (1)/(t))^(2) .

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

If (t^(2),2t) is one end ofa focal chord of the parabola,y^(2)=4x then the length of the focal chord will be:

If AB is a focal chord of the parabola y^(2)=4ax whose vertex is 0, then(slope of OA ) x (slope of OB)-

The number of focal chord(s) of length 4/7 in the parabola 7y^(2)=8x is

the distance of a focal chord of the parabola y^(2)=16x from its vertex is 4 and the length of focal chord is k ,then the value of 4/k is

Let PQ be a focal chord of the parabola y^(2)=4ax The tangents to the parabola at P and Q meet at a point lying on the line y=2x+a,a>0. Length of chord PQ is

If b and c are the lengths of the segments of any focal chord of a parabola y^(2)=4ax , then length of the semi-latus rectum is: