If the distance from the focus is 2 mm and the distance from the directrix is 0.5 mm then what is the name of the conic section?
(a) Circle
(b) Ellipse
(c) Parabola
(d) Hyperbola
This question was posed to me in an international level competition.
I need to ask this question from Basics of Conic Sections in portion Curves used in Engineering Practice of Engineering Drawing