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JEE Main 2019 · 10 Apr · Shift II

JEE Main 2019 Mathematics question on Circles

The locus of the centres of the circles, which touch the circle, x2+y2=1x^2 + y^2 = 1 externally, also touch the Y-axis and lie in the first quadrant, is
  1. A.
    y=1+2x, x≥0y = \sqrt{1 + 2x},\ x \geq 0
  2. B.
    y=1+4x, x≥0y = \sqrt{1 + 4x},\ x \geq 0
  3. C.
    x=1+2y, y≥0x = \sqrt{1 + 2y},\ y \geq 0
  4. D.
    x=1+4y, y≥0x = \sqrt{1 + 4y},\ y \geq 0
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Correct option: A

[JEE Main 2019 · 10 Apr · Shift II]

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