JEE Main · 2025 · 02 Apr 2025 · Shift 2 · Ellipse

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If the length of the minor axis of an ellipse is equal to one fourth of the distance between the foci, then the eccentricity of the ellipse is:
  1. (A)✓ Correct
  2. (B)
  3. (C)
  4. (D)

Answer: (A)

Solution

Let the ellipse have semi-axes and . The minor axis is and the distance between the foci is , so gives . Using , , hence and , so . The eccentricity is .

JEE Main · 2025 · 02 Apr 2025 · Shift 2 · Single correct option

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