The tangent and normals at the ends of a focal chord of a parabola meet in `P and Q` respectively. Then slope of `PQ` is : (A) 1 (B) 0 (C) undefined (D) `sqrt(3)`

If the tangents and normals at the extremities of a focal chord of a parabola intersect at (x_1,y_1) and (x_2,y_2), respectively, then (a) x_1=y_2 (b) x_1=y_1 (c) y_1=y_2 (d) x_2=y_1

If normals at the ends of the double ordinate x = 4 of parabola y^(2)=4x meet the curve again in P and P' respectively, then PP' =

The tangents at the end points of any chord through (1, 0) to the parabola y^2 + 4x = 8 intersect

One end point of a focal chrod of a parabola y^(2)=16x is (1,4) . The length of focal chord is : (A)24 (B)25 (C)20 (D)=22

If P(-3, 2) is one end of focal chord PQ of the parabola y^(2)+ 4x + 4y = 0 then slope of the normal at Q is

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

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

If the tangent and normal to the ellipse x^2 + 4y^2 = 4 at point P (theta) meets the major axes in Q and R respectively, and QR = 3 , then (A) cos theta = 1 /sqrt(3) (B) cos theta= 1/3 (C) cos theta = 2/3 (D) costheta = (-2/(3)

The normals at three points P,Q,R of the parabola y^2=4ax meet in (h,k) The centroid of triangle PQR lies on (A) x=0 (B) y=0 (C) x=-a (D) y=a

IF P_1P_2 and Q_1Q_2 two focal chords of a parabola y^2=4ax at right angles, then