JEE Main · 2022 · 27 Jun 2022 · Shift 2 · Complex Numbers

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The number of points of intersection of and is :
  1. (A)0
  2. (B)1
  3. (C)2✓ Correct
  4. (D)3

Answer: (C)

Solution

The first equation represents a circle with center and radius . The second equation represents an ellipse with foci at and , where so , , and . The ellipse equation is .

The lower extremity of the vertical diameter of the circle is at . Substituting into the ellipse equation: . Since this point lies inside the ellipse, and the circle has radius 2, the circle intersects the ellipse at exactly 2 points.

Answer: (C)

JEE Main · 2022 · 27 Jun 2022 · Shift 2 · Single correct option

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