Let P,Q,R be three points on a parabola, normals at which are concurrent, the centroid of `Delta PQR` must lie on

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^(*)

The centroid of triangle ABC,where A,B,C are points on the parabola 4y^(2)-3y+6x+1=0, whose normals are concurrent always lie on the line

Consider a triange ABC, where B and C are (-a,0) and (a,0) respectively . A be any point (h,k) P,Q,R divides the sides of this triangle in same ratio. Then centroid of Delta PQR is

Given three points P, Q, R with P (5, 3) and R lies on the x-axis. If equation of RQ is x-2y=2 and PQ is parallel to x-axis, then centroid of Delta PQR lies on the line