[" Through the vertex 'O' of the parabola y' "=4ax" ,variable chords OP and OQ are drawn at right angles.If "],[" he varible chord PQ intersects the axis of x at then distance OR: "],[[" A) equals double the perpendicular distance on focus from the directrix."],[" (B) equals the semi latus retum of the parabola "],[" (D) equals double the latus rectum of the parabola "]]

Through the vertex O of the parabola y^(2)=4ax, variable chords O Pand OQ are drawn at right angles.If the variables chord PQ intersects the axis of x at R, then distance OR

Through the vertex ' O^(prime) of the parabola y^2=4a x , variable chords O Pa n dO Q are drawn at right angles. If the variable chord P Q intersects the axis of x at R , then distance O R : (a)equals double the perpendicular distance of focus from the directrix. (b)equal the semi latus rectum of the parabola (c)equals latus rectum of the parabola (d)equals double the latus rectum of the parabola

Through the vertex ' O^(prime) of the parabola y^2=4a x , variable chords O Pa n dO Q are drawn at right angles. If the variable chord P Q intersects the axis of x at R , then distance O R : (a)equals double the perpendicular distance of focus from the directrix. (b)equal the semi latus rectum of the parabola (c)equals latus rectum of the parabola (d)equals double the latus rectum of the parabola

Through the vertex O of a parabola y^(2) = 4x chords OP and OQ are drawn at right angles to one another. Show that for all position of P, PQ cuts the axis of the parabola at a fixed point.

Find the vertex,focus,directrix,axis and latus-rectum of the parabola y^(2)=4x+4y

The line x-1=0 is the directrix of a parabola, y^2=kx then Find the vertex, focus,axis of parabola and length of latus rectum of the parabola.

Find the vertex, focus, directrix, and length of the latus rectum of the parabola x^(2)-4x-5y-1=0

Find vertex, focus, directrix and latus rectum of the parabola y^(2)+4x+4y-3=0 .