AP EAMCET · Maths · Parabola
If \((2,0)\) is the vertex and \(Y\)-axis is the directrix of a parabola, then its focus is
- A \((2,0)\)
- B \((-2,0)\)
- C \((4,0)\)
- D \((0,4)\)
Answer & Solution
Correct Answer
(C) \((4,0)\)
Step-by-step Solution
Detailed explanation
Vertex of parabola is \((2,0)\) Directrix of parabola is \(x=0\) Vertex is mid-point of focus and origin. \(\therefore \quad 2=\frac{a+0}{2}\) \(a=4\) \(\therefore\) Focus \(=(4,0)\)
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