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Conic Sections — Revision Notes

CBSE · Class 11 · Mathematics

Conic Sections revision notes for CBSE Class 11 Mathematics: 4 topics in quick points. Part of the CBSE Class 11 Mathematics syllabus.

193 questions56 flashcards14 formulas & key relations5 concepts

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Key Topics to Revise

1

1. Conic Sections and Their Classification

  • A conic section is obtained when a plane cuts a double-napped right circular cone.
  • The vertex is the fixed point where the generator meets the axis of the cone.
  • The cone has two nappes, and the type of curve depends on how the plane cuts the cone.
2

2. Circle

  • A circle is the set of all points in a plane equidistant from a fixed point.
  • The fixed point is the centre and the fixed distance is the radius.
  • The equation of a circle with centre (h, k) and radius r is (x - h)^2 + (y - k)^2 = r^2.
3

3. Parabola

  • A parabola is the set of all points equidistant from a fixed line called the directrix and a fixed point called the focus.
  • The axis of a parabola passes through the focus and is perpendicular to the directrix.
  • The vertex is the point where the parabola meets its axis.
4

4. Ellipse

  • An ellipse is the set of all points whose sum of distances from two fixed points is constant.
  • The two fixed points are the foci.
  • The midpoint of the foci is the centre.

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Full Notes

Key Concepts

A conic section is a curveA circle is the setA parabola is the setAn ellipse is the setA hyperbola is the set

Frequently Asked Questions

What are the important topics in Conic Sections for CBSE Class 11 Mathematics?
Key topics in Conic Sections include Conic Sections and Their Classification, Circle, Parabola, Ellipse. Study these first, then practise questions on each for Class 11 exams.
How should I revise Conic Sections for Class 11 exams?
Learn the core ideas first, then work through the 193 practice questions on Conic Sections. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All CBSE Class 11 Mathematics Revision Notes

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