IMPORTANT SHORT QUESTIONS :
1. A locus is the path of a point which moves in ………………………
Ans: Same plane.
2. When the section plane is inclined to the axis and is parallel to one of the generators, the section is a …………………
Ans: Parabola.
3. When the section plane is inclined to the axis and cuts all the generators, on one side of the apex, the section is an ………………..
Ans: Ellipse.
4. When the section plane cuts both the parts of the double cone on one side of the axis, the section is …………….
Ans: Hyperbola.
5. If eccentricity (e) of a curve is equal to 1, the curve is said to be ……………….
Ans: Parabola.
6. If eccentricity (e) of a curve is less than 1, the curve is said to be ……………….
Ans: Ellipse.
7. If eccentricity (e) of a curve is greater than 1, the curve is said to be ………….
Ans: Hyperbola.
8. The ………… is the point at which the conic cuts the axis.
Ans: Apex / Vertex.
9. The ………….. is the point at which the generator cuts the axis.
Ans: Apex / Vertex.
10. The point at which the conic cut its axis is called ……………
Ans: Apex / Vertex.
11. The line passing through the focus and perpendicular to the …………………. Is called an axis.
Ans: Directrix.
12. When a cone is cut by planes at different angles, the intersection curves obtained are known as ……………..
Ans: Conic.
13. A line passing through the center of an ellipse and parallel to tangents on the curve at the point of intersection of other diameters of the ellipse is called …………………
Ans: Conjugate diameter.
14. When the plane is perpendicular to the axis, the curve is a …………………
Ans: Circle.
15. When the plane is parallel to the axis, the curve is a …………………
Ans: Hyperbola.
16. The distance of the ends of the …………….. of an ellipse from the focus is equal to the half of the ………...........
Ans: Minor Axis, Major Axis.
17. In a conics, the line passing through the fixed point and perpendicular to the fixed line is called ………...
Ans: Axis.
18. When the plane makes the same angle with the axis as do the generators, the curve is a …………….
Ans: Parabola.
19. When the plane makes an angle with the axis greater than what do the generators, the curve is an …………………
Ans: Ellipse.
20. The curve generated by a point on the circumference of a circle, rolling along another circle inside it, is called …………………..
Ans: Hypocycloid.
21. The curve generated by a point on the circumference of a circle, rolling along another circle outside it, is called ………………….
Ans: Epicycloid.
22. The curve generated by a point on the circumference of a circle, rolling along a straight line is called …………………….
Ans: Cycloid.
23. For a hyperbola, mathematical equation (x2/a2- y2/b2) = ………………………
Ans: 1.