| 1 |
Two circles of radius 3 cm and 4 cm touch each other externally. The distance between their centers is: |
- A. 1 cm
- B. 7cm
- C. 4cm
- D. 5cm
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| 2 |
The opening of the parabola x<sup>2</sup>= 16y is to __________ of the x-axis: |
- A. Left
- B. Upward
- C. Right
- D. Downward
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| 3 |
The directrix of the parabola x<sup>2</sup> = -4ay is: |
- A. x = a
- B. x = -a
- C. y = a
- D. y = -a
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| 4 |
The vertex of the parabola y<sup>2</sup> = 4ax is: |
- A. (-a, 0)
- B. (a, 0)
- C. (0, -a)
- D. (0, 0)
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| 5 |
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>
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| 6 |
A chord passing through the focus of a parabola is called a ________ of the parabola: |
- A. Directrix
- B. Latus rectum
- C. Focus
- D. Focal chord
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| 7 |
The opening of the parabola x<sup>2</sup> = 4ay is upward of the: |
- A. x -axis
- B. y = c
- C. y - axis
- D. x = y
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| 8 |
Two imaginary tangents can be drawn to a circle from any point P(x<sub>1</sub>, y<sub>1</sub>) _______ the circle: |
- A. Inside
- B. On
- C. Outside
- D. None of these
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| 9 |
Equation of axis of the parabola x<sup>2</sup> = 4ay is: |
- A. x = 0
- B. x = a
- C. y = 0
- D. y = a
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| 10 |
Point p (-5, 6) lies ............ the circle x<sup>2</sup> + y<sup>2</sup> + 4x - 6y - 12 = 0 |
- A. Outside
- B. Inside
- C. On
- D. None of these
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