If the lines joining the origin to the points of intersection of the line `y=mx+2` and the curve `x^(2)+y^(2)=1` are at right-angles, then

If the lines joining the origin to the points of intersection of the line y =mx +2 and the curve x^(2)+y^(2)=1 are right angles then

If the pair of lines joining the origin and the points of intersection of the line ax+by=1 and the curve x^(2)+y^(2)-x-y-1=0 are at right angles, then the locus of the point (a, b) is a circle of radius=

The pair of straight lines joining the origin to the points of intersection of the line y=2sqrt(2x)+c and the circle x^2+y^2=2 1 are at right angles , if

If the lines joining the origin to the intersection of the line y=nx+2 and the curve x^2+y^2=1 are at right angles, then the value of n^2 is

If the lines joining the origin to the intersection of the line y=nx+2 and the curve x^2+y^2=1 are at right angles, then the value of n^2 is

If the lines joining the origin to the intersection of the line y=nx+2 and the curve x^2+y^2=1 are at right angles, then the value of n^2 is

If the lines joining the origin to the intersection of the line y=nx+2 and the curve x^2+y^2=1 are at right angles, then the value of n^2 is

If the lines joining the origin to the points of intersection of the line 2x+y-1 =0 and the curve 3x^(2)+lambdaxy-4x+1=0 are at right angles then

The lines joining the origin to the points of intersection of the line 3x-2y-1 and the curve 3x^(2)+5xy-3y^(2)+2x+3y=0, are