| 1 |
If r is the radius of any circle and C its center, then any point P(x<sub>1</sub>, y<sub>1</sub>) lies on the circle only if: |
- A. |CP| < r
- B. |CP| > r
- C. |CP| = r
- D. None of these
|
| 2 |
A line through a point say P perpendicular to the tangent to the curve at P is called: |
- A. Straight line
- B. Tangent line
- C. Normal line
- D. None of these
|
| 3 |
If the focus lies on the x-axis with coordinates F(a, 0) and directrix of the parabola is = - a then the equation of parabola is: |
- A. x<sup>2</sup> = 4ay
- B. y<sup>2</sup>= 4ax
- C. -x<sup>2</sup>= 4ay
- D. -y<sup>2</sup>= 4ax
|
| 4 |
The vertex of the parabola y<sup>2</sup> = -4ax is: |
- A. (-a, 0)
- B. (a, 0)
- C. (0, -a)
- D. (0, 0)
|
| 5 |
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
|
| 6 |
The focus of the parabola x2=-4ay is: |
- A. (-a , 0)
- B. (0, a)
- C. (0, -a)
- D. (a, 0)
|
| 7 |
Perpendicular dropped from the center of a circle on a chord _______ the chord: |
- A. Normal
- B. Bisects
- C. Equal to
- D. None of these
|
| 8 |
The directrix of the parabola x<sup>2</sup> = -4ay is: |
- A. x = a
- B. x = -a
- C. y = a
- D. y = -a
|
| 9 |
The two parts of a right circular cones are called: |
- A. Nappes
- B. Apex of the cone
- C. Generator
- D. Vertex
|
| 10 |
If the focus lies on the y - axis with coordinates F(0, a) and directrix of the parabola is y = -a, then the equation of parabola is: |
- A. x<sup>2</sup> = 4ay
- B. -x<sup>2</sup>= 4ay
- C. -y<sup>2</sup>= 4ax
- D. y<sup>2</sup>= 4ax
|
