Question

The locus of the centre of a circle which passes through the point (a, 0) and touches the line $x + 1 = 0$, is.

• A. Circle
• B. Ellipse
• C. Parabola
• D. Hyperbola

Answer 1

Answer: (C)

Parabola

Answer 2

The locus is a parabola as distance of centre from straight line = its distance from point (a, 0).