If the eccentricity of a conic is _____ it is called parabola.
- Zero
- One
- Less than one
- None of these
Explanation
A parabola is defined as the set of points equidistant from a fixed point (focus) and a fixed line (directrix).
Its eccentricity (e) = 1, which distinguishes it from ellipses (e < 1) and hyperbolas (e > 1).
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