Question

The ratio of the distance from the focus to the distance from the directrix is called as eccentricity.

(a) True

(b) False

I had been asked this question in class test.

My question comes from Basics of Conic Sections in section Curves used in Engineering Practice of Engineering Drawing

Answer 1

Right answer is (a) True

The explanation is: The ratio of the distance from the focus to the distance from the directrix is called eccentricity. It is denoted as e. The value of eccentricity can give information regarding which type of conics it is.