# NCERT Solutions Class 11 Maths Chapter 11 Exercise 11.1 Conic Sections

NCERT solutions for Class 11 maths Chapter 11 exercise 11.1 Conic Sections explains the sections of the cone with well-illustrated diagrams and terms like upper nappe, lower nappe, generator, and axis, so as to lay the foundation for the understanding of the curves. Further, it moves to the logic that if the plane intersects the nappe at any point except the vertex of the cone, then the following conditions arise :

Assume α is the constant angle between the axis of the cone and the rotating line, and β is the angle between the intersecting plane and the vertical axis of the cone.

- If β = 90 degrees , the section formed is a circle
- When α < β < 90 degrees , an ellipse is formed
- When β = α; a parabola is formed
- When 0 ≤ β < α; the plane cuts through both the nappes and the curves of intersection is a hyperbola

The NCERT solutions Class 11 maths Chapter 11 exercise 11.1 consists of 15 questions of which 11 are short and 4 are long answer type questions.

This section further talks about the degenerated conic sections, i.e., regarding the different cases when the plane cuts at the vertex of the cone, resulting in a point and straight line of a degenerated hyperbola. The students will also study an important equation of the circle. If C (h, k) is the center and r is the radius of a circle, while P(x, y) is any point on the circle, then the equation of the circle is given by

(x – h) ^{2} + (y – k) ^{2} = r ^{2 }

The exercise questions in this section can be accessed from the pdf link of the Class 11 maths NCERT solutions Chapter 11 exercise 11.1 Conic Sections given below :

**ā** Download NCERT Solutions Class 11 Maths Chapter 11 Exercise 11.1

**Exercise 11.1 Class 11 Chapter 11 **

### More Exercises in Class 11 Maths Chapter 11

- NCERT Solutions Class 11 Maths Chapter 11 Ex 11.2
- NCERT Solutions Class 11 Maths Chapter 11 Ex 11.3
- NCERT Solutions Class 11 Maths Chapter 11 Ex 11.4
- NCERT Solutions Class 11 Maths Chapter 11 Miscellaneous Ex

## NCERT Solutions Class 11 Maths Chapter 11 Exercise 11.1 Tips

NCERT solutions Class 11 maths Chapter 11 exercise 11.1 Conic Sections focuses on the definitions of the different types of curves and how they are formed. Hence, the students are advised to practice their previous knowledge of cones in geometry, as this will help them understand the current topic better.

NCERT solutions Class 11 maths Chapter 11 exercise 11.1 Conic Sections has quite a lot of new terms which the students must take note of. They must practice drawing diagrams which will help in visualizing and memorizing the details better. The solved examples in the chapter can play an important role in learning the facts; hence the students should try not to miss out on them.

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