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CONIC SECTIONS — MATHS STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceMATHSCONIC SECTIONS1 Mark
MCQ
If a be the radius of a circle which touches x-axis at the origin, then its equation is:
  • A
    $\text{x}^2 + \text{y}^2 + \text{ax} = 0$
  • B
    $\text{x}^{2} + \text{y}^{2} \underline{+} 2\text{ya} = 0$
  • ✓
    $\text{x}^{2} + \text{y}^{2} \underline{+} 2\text{xa} = 0$
  • D
    $\text{x}^2 + \text{y}^2 + \text{ya} = 0$
✓

Answer

Correct option: C.
$\text{x}^{2} + \text{y}^{2} \underline{+} 2\text{xa} = 0$
  1. $\text{x}^{2} + \text{y}^{2} \underline{+} 2\text{xa} = 0$

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