The curve for which the normal at every point passes through a fixed point is a (A) parabola (B) hyperbola (C) ellipse (D) circle

The curve for which the normal at every point passes through a fixed point (h,k) is

Show that the curve for which the normal at every point passes through a fixed point is a circle.

Show that the curve for which the normal at every point passes through a fixed point is a circle.

A tangent to the parabolax^2 =4ay meets the hyperbola xy = c^2 in two points P and Q. Then the midpoint of PQ lies on (A) a parabola (C) a hyperbola (B) an ellipse (D) a circle

x=a cos theta, y=a sin theta is a parametric form of : (A) Parabola (B) Hyperbola (C) Ellipse (D) Circle

Locus of the centre of the circle touching circles |z|=3 and |z-4|=1 externally is (A) a parabola (B) a hyperbola (C) an ellipse (D) none of these