General Polar Equations of Conics - Question Bank

1. What conic section is described by r = 1 / (1 + cos θ)?
A) Ellipse
B) Parabola
C) Hyperbola
D) Circle
2. In the polar equation r = 20 / (5 - 4 sin θ), what is the semi-latus rectum 'l'?
A) 20/5
B) 4
C) 5
D) 20
3. What type of conic is represented by r = 7 / (1 + sin θ)?
A) Ellipse
B) Parabola
C) Hyperbola
D) Circle
4. The polar equation r = 12 / (4 - 3 cos θ) represents a conic. What is its eccentricity?
A) 3/4
B) 4/3
C) 3/12
D) 12/3
5. What is the directrix equation for the conic r = 9 / (1 - sin θ)?
A) y = 9
B) y = -9
C) x = 9
D) x = -9
6. If the polar equation of a conic is r = 5 / (2 + 2 cos θ), what is its eccentricity?
A) 1/2
B) 1
C) 2
D) 5/2
7. Consider the polar equation r = 10 / (1 - 0.5 sin θ). What is the value of 'd' for this conic?
A) 0.5
B) 1
C) 10
D) 20
8. What type of conic is described by r = 15 / (3 + 5 sin θ)?
A) Ellipse
B) Parabola
C) Hyperbola
D) Circle
9. The polar equation r = 2 / (1 - cos θ) represents a parabola. What is the distance of the directrix from the focus?
A) 1
B) 2
C) 1/2
D) 0
10. What is the semi-latus rectum for the conic r = 6 / (1 + 2 cos θ)?
A) 6
B) 3
C) 12
D) 2
11. If a conic section has the polar equation r = ed / (1 + e cos θ) and e = 1, what is the shape of the conic?
A) Circle
B) Ellipse
C) Parabola
D) Hyperbola
12. For the polar equation r = 8 / (3 + 4 sin θ), what is the eccentricity 'e'?
A) 3/4
B) 4/3
C) 3/8
D) 8/3
13. What type of conic is represented by r = 10 / (5 + 5 cos θ)?
A) Ellipse
B) Parabola
C) Hyperbola
D) Circle
14. Consider the polar equation r = 7 / (1 + 0.5 sin θ). What is the directrix distance 'd'?
A) 0.5
B) 1
C) 7
D) 14
15. The polar equation r = 5 / (2 - 2 cos θ) represents a conic. What is its eccentricity?
A) 1/2
B) 1
C) 2
D) 5/2
16. What is the value of 'd' for the polar equation r = 12 / (1 + cos θ)?
A) 1
B) 12
C) 1/12
D) 2
17. If a conic has the polar equation r = ed / (1 - e sin θ), and e < 1, what type of conic is it?
A) Parabola
B) Hyperbola
C) Ellipse
D) Circle
18. Which polar equation represents a hyperbola with eccentricity e = 2 and focus at the origin, with a directrix y = 3?
A) r = 6 / (1 + 2 sin θ)
B) r = 3 / (1 + 2 sin θ)
C) r = 6 / (2 + sin θ)
D) r = 3 / (2 + sin θ)
19. What is the distance of the directrix from the focus for the conic r = 3 / (1 + 0.75 cos θ)?
A) 1
B) 3/0.75
C) 0.75
D) 3
20. The polar equation r = 4 / (1 - 2 cos θ) describes a conic. What is its eccentricity?
A) 1/2
B) 1
C) 2
D) 4
21. What type of conic section is represented by r = 6 / (2 + sin θ)?
A) Ellipse
B) Parabola
C) Hyperbola
D) Circle
22. Consider the equation r = 8 / (1 - cos θ). What is the eccentricity 'e'?
A) 0
B) 1
C) 8
D) 1/8
23. What does the term 'ed' represent in the polar equation of a conic, where 'e' is eccentricity and 'd' is the distance of the directrix from the focus?
A) Semi-major axis
B) Semi-latus rectum
C) Focal length
D) Directrix equation
24. If the polar equation of a conic is r = 10 / (1 + e cos θ), and it passes through the point (r, θ) = (5, 0), what is the value of 'e'?
A) 1/5
B) 2/5
C) 3/5
D) 4/5
25. For the polar equation r = 7 / (2 + 3 cos θ), what is the value of 'd' after normalizing the denominator?
A) 7/2
B) 2/7
C) 3/2
D) 2/3
26. What type of conic is given by the polar equation r = 9 / (1 - sin θ)?
A) Ellipse
B) Parabola
C) Hyperbola
D) Circle
27. The polar equation r = 12 / (5 - 4 cos θ) represents a conic. What is the distance of the directrix from the focus?
A) 12/5
B) 5/12
C) 4/5
D) 5/4
28. Consider the polar equation r = 15 / (3 - 3 sin θ). What is the eccentricity of this conic?
A) 1/3
B) 1
C) 3
D) 5
29. What is the directrix for the conic section r = 5 / (1 + 0.5 cos θ)?
A) x = 10
B) x = 5
C) y = 10
D) y = 5
30. Which conic section is described by the polar equation r = 2 / (1 + cos θ)?
A) Ellipse
B) Parabola
C) Hyperbola
D) Circle
31. In the equation r = 8 / (1 - 3 sin θ), what is the value of 'd' when expressed in the standard form r = ed / (1 ± e sin θ)?
A) 8
B) 1/3
C) 3
D) 8/3
32. If a conic section has the polar equation r = 6 / (2 + 2 cos θ), what is its eccentricity?
A) 1/2
B) 1
C) 2
D) 3
33. What type of conic is represented by r = 10 / (3 + 4 cos θ)?
A) Ellipse
B) Parabola
C) Hyperbola
D) Circle
34. The polar equation r = 3 / (1 + sin θ) represents a parabola. What is the distance of the directrix from the focus?
A) 1
B) 3
C) 1/3
D) 0
35. Consider the polar equation r = 5 / (1 - 2 sin θ). What is the eccentricity 'e' of this conic?
A) 1/2
B) 1
C) 2
D) 5
36. What is the semi-latus rectum 'l' for a conic section with the polar equation r = ed / (1 + e cos θ)?
A) ed
B) e/d
C) d/e
D) 1/ed
37. Which of the following polar equations represents a parabola with its focus at the origin and directrix x = 4?
A) r = 4 / (1 + cos θ)
B) r = 2 / (1 + cos θ)
C) r = 4 / (2 + cos θ)
D) r = 1 / (1 + cos θ)
38. The polar equation r = 3 / (2 - sin θ) represents a conic section. What is the nature of this conic?
A) Ellipse (e = 1/2)
B) Parabola (e = 1)
C) Hyperbola (e = 2)
D) Circle (e = 0)
39. What is the directrix distance 'd' for the conic r = 4 / (1 + cos θ)?
A) 1
B) 4
C) 1/4
D) 2
40. For the polar equation r = 7 / (5 - 3 sin θ), what is the value of 'd' after normalizing the denominator to have a leading coefficient of 1?
A) 7/5
B) 5/7
C) 3/5
D) 5/3
41. What conic section is described by the polar equation r = 10 / (2 + 2 cos θ)?
A) Ellipse
B) Parabola
C) Hyperbola
D) Circle
42. If a polar equation of a conic is given by r = 6 / (1 - sin θ), what is its eccentricity?
A) 0
B) 1
C) 1/6
D) 6
43. What type of conic is represented by r = 12 / (4 + 3 cos θ)?
A) Ellipse
B) Parabola
C) Hyperbola
D) Circle
44. In the equation r = 8 / (3 - 3 sin θ), what adjustment is needed to match the standard polar form r = ed / (1 ± e sin θ) or r = ed / (1 ± e cos θ)?
A) Divide numerator and denominator by 3
B) Multiply numerator and denominator by 3
C) Subtract 3 from the numerator
D) Add 3 to the denominator
45. Consider the polar equation r = 5 / (1 + 2 cos θ). What is the eccentricity 'e' of this conic section?
A) 1/2
B) 1
C) 2
D) 5
46. What type of conic section is represented by the polar equation r = ed / (1 + e cos θ) when 0 < e < 1?
A) Parabola
B) Hyperbola
C) Ellipse
D) Circle
47. For a conic section in polar coordinates, if e > 1, what type of conic is represented by the equation r = ed / (1 + e cos θ)?
A) Ellipse
B) Parabola
C) Hyperbola
D) Circle
48. If the eccentricity 'e' of a conic section in polar form is equal to 1, what type of conic is it?
A) Ellipse
B) Hyperbola
C) Parabola
D) Circle
49. What does the parameter 'd' represent in the polar equation of a conic section r = ed / (1 + e cos θ)?
A) Eccentricity
B) Semi-latus rectum
C) Directrix distance from the focus
D) Focal length
50. In polar coordinates, what is the general form of a conic section with eccentricity 'e' and a focus at the origin?
A) r = ed / (1 + e cos θ)
B) r = ed / (1 - e sin θ)
C) r = ed / (e + cos θ)
D) r = e / (d + cos θ)