| 1 |
The directrix of the parabola x<sup>2</sup> = -4ay is: |
- A. x = a
- B. x = -a
- C. y = a
- D. y = -a
|
| 2 |
The radius of circle x<sup>2</sup> + y<sup>2</sup> + ax + by + c = 0 is: |
|
| 3 |
The two parts of a right circular cones are called: |
- A. Nappes
- B. Apex of the cone
- C. Generator
- D. Vertex
|
| 4 |
A chord containing the center of the circle is called ______ of the circle: |
- A. Diameter
- B. Chord
- C. Radius
- D. None of these
|
| 5 |
The center of circle (x+3)<sup>2</sup> + (y-2)<sup>2</sup> = 16 equals: |
- A. (-3, 2)
- B. (3, -2)
- C. (3, 2)
- D. (-3, -2)
|
| 6 |
Point (5, 6) lies ..... the circle x<sup>2</sup> + y<sup>2</sup> = 81: |
- A. Outside
- B. Inside
- C. On
- D. None of these
|
| 7 |
If r is the radius of the circle and its center is at origin, then equation of circle is: |
- A. x<sup>2</sup> + y<sup>2</sup> = a<sup>2</sup>
- B. x<sup>2</sup> + y<sup>2</sup> = r<sup>2</sup>
- C. x<sup>2</sup> - y<sup>2</sup> = a<sup>2</sup>
- D. x<sup>2</sup> - y<sup>2</sup> = r<sup>2</sup>
|
| 8 |
|
|
| 9 |
The radius of point circle is: |
|
| 10 |
The equ. of directrix of the parabola y<sup>2</sup> = -4ax is: |
- A. x = a
- B. x = - a
- C. y = a
- D. y = -a
|
