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ECAT Pre General Science Mathematics Chapter 23 Conic Section Online Test MCQs With Answers
Question # 1
The centre of the circle x2+y2 -2fx-2gy+x=0 is
Choose an answer
(-g,-f)
(g,f)
(f,g)
(-f,-g)
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Question # 2
If (2, 3) and (2, 5) are end points of a diameter of a circle, then the centre of the circle is
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(2, 4)
(4, 8)
(0, 2)
(0, -2)
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Question # 3
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Question # 4
The two different parts of the hyperbola are called its
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Vertices
Directrices
Nappes
Branches
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Question # 5
The common point to four standard parabolas
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Focus
Centre
Vertex
P(x,y)
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Question # 6
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Question # 7
For the parabola the line through focus and perpendicular to the directrix is called
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Tangent
Vertex
Axis
None
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Question # 8
Choose an answer
8
4
64
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Question # 9
A line joining two distinct points on a parabola is called a ______ of the parabola.
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Chord
Tangent
Lust rectum
directrix
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Question # 10
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none of these
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Question # 11
The line 2x +√6y =2 is a tangent to the curve x2 -2y2 =4 The point of contact is
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(√6,1)
(2,3)
(7,-2√6)
(4,-√6)
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Question # 12
x =r cosθ,y= sinθ are the parametric equations of
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Circle
Ellipse
Parabola
Hyoerbola
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Question # 13
The line y = 4x + c touches the hyperbola x
2
- y
2
= 1 if
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Question # 14
The number of real tangents that can be drawn to the ellipse 3x
2
+ 5y
2
= 32 passing thro. (3, 5) is
Choose an answer
0
1
2
Infinite
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Question # 15
The remove the term involving xy, from 7x2 -6√3xy+ 13y2 -16 =0 the angel of rotation is
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θ = 30°
θ = 45°
θ = 60°
θ = 75°
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Question # 16
The equation of the circle with centre (-h, -k) and radius r is
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(x +h)
2
+ (y+k)
2
= r
2
(x +h)
2
+ (y-k)
2
= r
2
(x -h)
2
+ (y+k)
2
= r
2
(x -h)
2
+ (y-k)
2
= r
2
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Question # 17
The number of standard parabolic functions are is
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4
2
3
1
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Question # 18
An ellipse slides between two lines at right angles to one another. The locus of its centre is :
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a parabola
an ellipse
a circle
a hyperbola
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Question # 19
A rectangular hyperbola whose centre is C is cut by any circle of radius r in four points P, Q, R and S. Then CP
2
+ CQ
2
+ CR
2
+ CS
2
=
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r
2
2 r
2
3 r
2
4 r
2
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Question # 20
Choose an answer
5
25
3
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Question # 21
The equation of the parabola with directirx x = 2 and the axis y = 0 is
Choose an answer
y
2
= 8x
y
2
= -8x
y
2
= 4x
y
2
= -4x
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Question # 22
The eccentricity of parabola is:
Choose an answer
1
0
Greater than 1
Less than 1
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Question # 23
If a cone is cut by a plane perpendicular to the axis of the cone, then the section is a
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parabola
circle
hyperbola
ellipse
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Question # 24
If the circle x
2
+ y
2
+ 2gx +2fy + c = 0 passes through the origin then
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c = 0
c = -1
c = -2
c = 1
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Question # 25
The axis of the parabola y
2
= 4ax is
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X = 0
Y = 0
X = y
X = -y
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Question # 26
If a > 0 they parabola y2 =-4ax lies in
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I and iv quadrant
I quadrant
II and III quadrant
All are incorrect
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Question # 27
The line y= 4x +c touches the hyperbola x2- y2 =1 if and only if
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c =±√2
c =0
c=±√17
c=±√15
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Question # 28
Choose an answer
0
1
13
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Question # 29
The sum of the focal distance from any point on the ellipse 9x2 +16y2 =144 is
Choose an answer
32
16
18
8
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Question # 30
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Question # 31
The constant distance of all points of the circle from its centre is called the
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Radius of the circle
Secant of the circle
Chord of the circle
Diameter of the circle
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