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JEE Questions for Maths Conic Section Quiz 2 - MCQExams.com
JEE
Maths
Conic Section
Quiz 2
The equation of the parabola with vertex at the origin and directrix y = 2 is
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y2 = 8x
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y2 = - 8x
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y2 = √8x
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x2 = - 8y
The length intercepted by the curve y
2
= 4
x
on the line satisfying dy/d
x
= 1 and passing through point (0,is given by
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1
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2
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0
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None of these
The parabola with directrix
x
+ 2y - 1 = 0 and focus (1,is
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4x2 - 4xy + y2 - 8x + 4y + 4 = 0
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4x2 + 4xy + y2 - 8x + 4y + 4 = 0
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4x2 + 5xy + y2 + 8x - 4y + 4 = 0
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4x2 - 4xy + y2 - 8x - 4y + 4 = 0
If a point p moves such that is distances from the point A(1,and the line
x
+ y + 2 = 0 are equal, then the locus of P is
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a straight line
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a pair of straight lines
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a parabola
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an ellipse
If the foci of an ellipse are (± √5,and its eccentricity is √5/3, then the equation of the ellipse is
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9x2 + 4y2 = 36
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4x2 + 9y2 = 36
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36x2 + 9y2 = 4
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9x2 + 36y2 = 4
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a2 + b2
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(a + b)2/ 2
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ab
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(a - b)2/ 2
If tangents are drawn to the ellipse x
2
+ 2y
2
= 2, then the locus of the mid-point of the intercept made by the tangents between the coordinate axes is
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0%
2)
0%
0%
The point on the parabola y
2
= 64
x
which is nearest to the line 4
x
+ 3y + 35 = 0 has coordinates
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(9, -24)
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(1, 81)
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(4, - 16)
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(-9, -24)
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0%
2)
0%
0%
If the line
x
+ y - 1 = 0 is a tangent to the parabola y
2
- y +
x
= 0, then the point of contact is
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(0, 1)
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(1, 0)
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(0, -1)
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(-1, 0)
If the line
x
cos α + y sin α = p be normal to the ellipse
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p2 (a2 cos2 α + b2 sin2 α) = a2 - b2
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p2 (a2 cos2 α + b2 sin2 α) = (a2 - b2)2
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p2 (a2 sec2 α + b2 cosec2 α) = a2 - b2
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p2 (a2 sec2 α + b2 cosec2 α) = (a2 - b2)2
The line 3
x
+ 5y = 15√2 is a tangent to the ellipse
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π/6
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π/4
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π/3
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2π/3
The value of c, for which the line y = 2
x
+ c, is tangent to the parabola y
2
= 4a(
x
+ a) is
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a
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3a/2
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2a
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5a/2
The tangent to the parabola y
2
= 16
x
, which is perpendicular to a line y - 3
x
- 1 = 0, is
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3y + x + 36 = 0
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3y - x - 36 = 0
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x + y - 36 = 0
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x - y + 36 = 0
Three normals are drawn to the parabola y
2
=
x
passes through point (a, 0). Then
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a = 1/2
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a = 1/4
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a > 1/2
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a < 1/2
A common tangent to 9
x
2
- 16y
2
= 144 and
x
2
+ y
2
= 9 is
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0%
0%
2)
0%
0%
None of these
The equation of the tangents to the ellipse 4
x
2
+ 3y
2
= 5, which are parallel to the line y = 3
x
+ 7, are
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0%
0%
2)
0%
0%
None of these
The equation of normal at the point (0,of the ellipse 9
x
2
+ 5y
2
= 45, is
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X - axis
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Y - axis
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y + 3 = 0
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y - 3 = 0
If the line
l
x
+ my = 1 is a normal to the hyperbola
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a2 - b2
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a2 + b2
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(a2 + b2)2
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(a2 - b2)2
A line touches the circle
x
2
+ y
2
= 2 and the parabola y
2
= 8
x
, then equation of tangent is
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y = x + 3
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y = x + 2
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y = x + 4
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y = x + 1
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0%
0%
2)
0%
0%
None of these
The equation of the normal at a point (a sec θ, b tan θ) of the curve b
2
x
2
- a
2
y
2
= a
2
b
2
, is
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0%
0%
2)
0%
0%
The equation of the chord of the circle
x
2
+ y
2
- 4
x
= 0, whose mid - point is (1,is
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y = 2
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y = 1
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x = 2
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x = 1
The middle point of the chord
x
+ 3y = 2 of the conic
x
2
+
x
y - y
2
= 1, is
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(5, -1)
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(1, 1)
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(2, 0)
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(-1, 1)
The mid - point of the chord 4
x
- 3y = 5 of the hyperbola 2
x
2
- 3y
2
= 12, is
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0%
(2, 1)
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0%
The length of the common chord of the parabolas y
2
=
x
and
x
2
= y, is
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2√2
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1
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√2
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1/√2
The locus of middle points of chords of hyperbola 3
x
2
- 2y
2
+ 4
x
- 6y = 0 parallel to y = 2
x
, is
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3x - 4y = 4
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3y - 4x + 4 = 0
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4x - 3y = 3
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3x - 4y = 2
If a focal chord of parabola y
2
= 16
x
cuts it at points (f, g) and (h, k). Then f, h is equal to
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12
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16
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14
0%
None of these
If the parabola y
2
= 4a
x
, the length of the chord passing through the vertex inclined to the axis at π/4, is
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4a√2
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2a√2
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a√2
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a
If the chords of contact of tangents from two points (
x
1
, y
1
) and (
x
2
, y
2
) to the hyperbola 4
x
2
- 9y
2
- 36 = 0 are right angles, then
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9/4
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- (9/4)
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81/16
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- (81/
If a focal chord of the parabola y
2
= a
x
is 2
x
- y - 8 = 0, then the equation of the directrix is
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x + 4 = 0
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x - 4 = 0
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y - 4 = 0
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y + 4 = 0
The length of the chord of the parabola y
2
= 4a
x
, which passes through the vertex and makes an angle α with the axis of the parabola is
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4a cos α cosec2 α
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4a α cosec2 α
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a cos α cosec2 α
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a cos α cosec α
The equation of hyperbola whose asymptotes are 3
x
± 5y = 0 and vertices are (± 5,is
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3x2 - 5y2 = 25
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5x2 - 3y2 = 225
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25x2 - 9y2 = 225
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9x2 - 25y2 = 225
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x2 + y2 = 16
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x2 + y2 = 25
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x2 + y2 = 9
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x2 + y2 = 41
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0%
2)
0%
0%
If 2y =
x
and 3y + 4
x
= 0 are the equations of a pair of conjugate diameters of an ellipse, then the eccentricity of the ellipse is
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0%
2)
0%
0%
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1/√2
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√3/2
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1√3
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1/2
The value of k, if (1, 2), (k -are conjugate points with respect to the ellipse 2
x
2
+ 3y
2
= 6, is
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2
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4
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6
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8
Equation of asymptotes of
x
y = 7
x
+ 5y are
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x = 7, y = 5
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x = 5, y = 7
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xy = 35
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None of these
For the parabola y
2
+ 8
x
-12y +20=0
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vertex is (2, 6)
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focus is (0, 6)
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latusrectum 4
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axis Y = 6
The equation of the hyperbola having its eccentricity 2 and the distance between its focii is 8, is
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2)
0%
0%
A point P on an ellipse is at a distance 6 units from a focus. lithe eccentricity of the ellipse is 3/5, then the distance of P from the corresponding directrix is
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8/5
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5/8
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10
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12
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None of these
If the length of the latusrectum and the length of transverse axis of a hyperbola arc 4√3 and 2√3 respectively, then the equation of the hyperbola is
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0%
0%
2)
0%
0%
0%
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12/5
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16
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24/7
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24/5
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12/7
The value of λ for which the curve (7
x
+ 5)
2
+ (7y + 3)
2
= λ
2
(4
x
+ 3y - 24)
2
represents a parabola is
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± (6/5)
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± (7/5)
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± (1/5)
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± (2/5)
An ellipse passing through (4√2, 2√has foci at (-4,and (4, 0). Then, its eccentricity is
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√2
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1/2
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1/√2
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1/√3
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0%
2)
0%
0%
On the ellipse 9
x
2
+ 25y
2
= 225, then find the point the distance from which to the our focus F
1
is four times the distance to the other focus F
2
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(-15, √63)
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2)
0%
0%
If the equation of parabola is
x
2
= -9y, then equation of directrix length of latusrectum are
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y = - (9/8), 8
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y = 9/4, 9
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y = - (9/4), 9
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None of these
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1/3
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1/√3
0%
0%
2√2/3
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