The eccentricity of a CIRCLE is:
AEqual to one (like a parabola)
BGreater than one (like a hyperbola)
CEqual to zero (special case)
DBetween zero and one (like ellipse)
Answer & Solution
Correct answer: C. Equal to zero (special case)
Circle: e = 0 (all points equidistant from centre; foci coincide). Ellipse: 0 < e < 1. Parabola: e = 1. Hyperbola: e > 1. Circle is the limit of ellipse when foci merge.
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