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CBSE Questions for Class 11 Engineering Maths Conic Sections Quiz 11 - MCQExams.com

From a point P perpendiculars PM and PN are drawn to curve 3x2+4xy+y2=0 to meet at M and N. If MN=25, then?
  • Locus of P is pair of lines
  • Locus of P is circle
  • Area bounded by locus of P and x-axis above the x-axis is 50π
  • Distance of any tangent to locus of P from origin is 10 unit
A circle has ccentre C on axes of parabola and it touches the parabola at point P. CP makes an angle of 120o with axis of parabola. If radius of circle is 2, then latus rectum of parabola is 
  • 2
  • 4
  • 8
  • 16
If e1 is the eccentricity of the ellipse x216+y225=1ande2 is the eccentricity of the hyperbola passing through the foci of the ellipse and $${ e }_{ 1 }{ e }_{ 2 }=1$, then equation of the hyperbola is  ___________________.
  • x29y216=1
  • x216y29=1
  • x29y225=1
  • none of these
Length of latus rectum of the parabola 9x2+16y2+24xy4x+3y=0 is :
  • 120
  • 14
  • 15
  • 1
Find the equation of the circle having (1,2) as its centre and passing through the intersection of the lines 3x+y=14 and 2x+5y=18.
  • x2y2+2x+4y+20=0
  • x2+y2+2x4y+20=0
  • x2+y22x+4y20=0
  • x2y2+2x4y+20=0
The equation of the circle which bisects the circumference of the circles  x2+y2=1,x2+y22x=3 and x2+y2+2y=3 is
  • x2+y24x+4y1=0
  • x2+y2+2x+2y1=0
  • x2+y2+2x2y1=0
  • x2+y22x+4y1=0
The equation of the circle passing through (4,6) and having centre (1,2) is
  • x2+y22x4y20=0
  • x2+y22x+4y20=0
  • x2+y2+2x4y20=0
  • x2+y2+2x+4y20=0
If the length of the latus rectum of the parabola 289(x3)2+289(y1)2=(15x8y+13)2 is k, then [k]=?
  • 5
  • 2
  • 3
  • 1
The latus rectum of a conic section is the width of the function through the focus. The positive difference between the length of the latus rectum of 3y=x2+4x9 and x2+4y26x+16y=24 is-
  • 12
  • 2
  • 32
  • 52
If the line 3x+4y=1 touches the parabola y2=4ax then length of its latus rectum is equal to 
  • 3/16
  • 3/8
  • 3/4
  • 9/16
The parabola y6=4ax passes through the point (2,6), then the length of its latus rectum is 
  • 18
  • 9
  • 6
  • 16
The length of the latus rectum of the parabola x2=ay+by+c is
  • a4
  • a3
  • 1a
  • 14a
A tangent drawn to hyperbola x2a2y2b2=1 at P(π6) forms a triangle of area 3a2 square units, with coordinate axes. Its eccentricity is equal to 
  • 4
  • 5
  • 92
  • 17
In the line 2x+3y=1 touches the parabola y2=4a(x+a), then the length of its latus rectum is
  • 89
  • 813
  • 4
  • 49
  • 413
If the latus rectum subtends a right angel at the center of a hyperbola, then its eccentricity is 
  • 2
  • 3+12
  • 512
  • 3+52
The equation y=2x2y2+x2+y22 represents, where x>0
  • Circle with radius 2 units
  • Parabola
  • A point circle
  • Ellipse
If PQ is a double ordinate of the hyperbola x2a2y2b2=1, such that OPQ is an equilateral tnangle, O being the centre of the hyperbola, then the eccentncity e of the hyperbola satisfies
  • e=23
  • e=32
  • e>23
  • 1
A tangent to the curve y = f(x) cuts the line y = x at a point which is at a distance of 1 unit from y - axis. The equation of the curve is 
  • x1y1=C
  • xy=C
  • xy=C
  • none of these
The length of the latus rectum of the parabola x24x8y+12=0 is
  • 4
  • 6
  • 8
  • 2
Eccentricity of the hyperbola whose asymptotes are given by 3x+2y+5=0 and 2x+3y+5=0 is
  • 2
  • 32
  • 2
  • None of these
If x=2+3cosθ and y=13sinθ represent a circle then the centre and radius is?
  • (2,1),9
  • (2,1),3
  • (1,2),13
  • (2,1),3
The name of the conic whose focus is (1,1) corresponding direction is xy+1=0 whose length of semi latusrectum is 3, is
  • Parabola
  • Ellipse
  • Hyperbola
  • Pair of lines
The graph of the conic x2(y1)2=1 has one tangent line with positive slope that passes through the origin, the point of tangency being (a, b). Then Length of the latus rectum of the conic is
  • 1
  • 2
  • 2
  • None
Let PQ be a variable focal chord of the parabola y2=4ax where vertex is A. Locus of, centre triangle APQ is a parabola P1 Latus rectum of parabola P1 is 
  • 2a3
  • 4a3
  • 8a3
  • 16a3
If S be the focus of a parabola and PQ be the focal chord,such that SP=3 and SQ = 6,then the length of latus rectum of the parabola is
  • 4
  • 2
  • 8
  • 16
The equation of the image of the circle (x3)2+(y2)2=1inthemirrorx+y=19is
  • (x14)2+(y13)2=1
  • (x15)2+(y14)2=1
  • (x16)2+(y15)2=1
  • (x17)2+(y16)2=1
If eccentricity of the hyperbola x2cos2θy2sin2θ=1 is more then 2 when θ  (0,π2). Find the possible values of length of latus rectum 
  • (3,)
  • (1,3/2)
  • (2,3)
  • (3,2)
Let0<θ<π2. If the eccentricity of the hyperbola x2cos2θy2sin2θ=1 is greater than 2, then the length of its latus rectum lies in the interval:
  • (1,3/2]
  • (3/2,2]
  • (3,)
  • (2,3]
The lines 2x3y5=0 and 3x4y=7 are diameters of a circle of area 154 sq units, then the equation if the circle is :
  • x2+y2+2x2y62=0
  • x2+y2+2x2y47=0
  • x2+y22x+2y62=0
  • x2y22x+2y62=0
Axes are coordinates axes, the ellipse passes through the points where the straight line x4+y3=1  meets the coordinates axes. Then equation of the ellipses is 
  • x216+y29=1
  • x264+y236=1
  • x24+y23=1
  • x28+y26=1
The length of the latus rectum of the parabola, y26y+5x=0 is
  • 1
  • 3
  • 5
  • 7
The equation x2+y2+4x+6y+13=0 represents 
  • Circle
  • Pair of coincident straight lines
  • Pair of concurrent straight lines
  • Point
Length of the latus rectum of the parabola 25[(x2)2+(y3)2]=(3x4y+7)2 is:
  • 4
  • 2
  • 1/5
  • 2/5
Which of the following can be the equation of an ellipse?
  • x2+y2=5
  • x29+x29=1
  • 2x2+3y2=5
  • 2x+2y=5
The curve for which the normal at any point (x,y) and the line joining origin to that point form and isosceles triangle with the x-axis as base is 
  • an ellipse
  • a rectangular hyperbola
  • a circle
  • circle.
The equation of circle at center (3,4) and radius 5.
  • x2+y26x8y=0
  • x2+y2+3x+4y+5=0
  • x2+y2+6x+8y=0
  • None.
If two distinct chords of a parbola y2=4ax passing through (a , 2a) are bisected on the line x + y =1, then the length of the latnsrectum can be 
  • 2
  • 1
  • 4
  • 3
If two distinct chords of a parabola y2=4ax passing through (a,2a) are bisected on the x+y=1, then the length of the latusrectum can be 
  • 2
  • 1
  • 4
  • 3
If the parabola y2=4ax passes through the point (3,2), then the length of its latus rectum is 
  • 2 / 3
  • 4 / 3
  • 1 / 3
  • 4
Match the column I with column II and mark the correct option from the codes given below.
Column IColumn II
i
ii
iii
iv
v
xy+a2a(x+y)
2x272xy+23y24x28y48=0
6x25xy6y2+14x+5y+4=0
14x24xy+11y244x58y+71=0
4x24xy+y212x+6y+9=0
p
q
r
s

Ellipse
Hyperbola
Parabola
Pair of straight lines
  • (i)=s,(ii)=q,(iii)=s,(iv)=p,(v)=s
  • (i)=p,(ii)=r,(iii)=q,(iv)=r,(v)=s
  • (i)=q,(ii)=p,(iii)=r,(iv)=s,(v)=q
  • (i)=r,(ii)=s,(iii)=p,(iv)=q,(v)=r
If PSQ is the focal chord of the parabola y2=8x such that SP=6 . Then the length of SQ is
  • 6
  • 4
  • 3
  • none of these
If x2+y22x+2ay+a+3=0 represents a real circle with non-zero radius, then most appropriate is?
  • a(,1)
  • aϵ(1,2)
  • aϵ(2,)
  • aϵ(,1)(2,)
Equation of the circle whose radius is 3 and centre is (1,2)
  • x2+y22x+4y=4
  • x2+y2+2x4y+4=0
  • x2+y2+2x4y=4
  • x2+y22x+4y+4=0
If C is the centre and A, B are two points on the conic 4x2+9y28x36y+4=0 such that ABCπ2, then 1+1CA2CB2=
  • 1336
  • 3613
  • 1633
  • 3316
If the equation px2+(2q)xy+3y26qx+30y+6q=0 represents a circle, then the values of p and q are
  • 3, 1
  • 2, 2
  • 3, 2
  • 3, 4
The length of the lotus rectum of the parabola 9x26x+36y+19=0
  • 36
  • 9
  • 6
  • 4
Equation of the circle whose radius is a+b and centre (a,b)
  • x2+y22ax+2by=2ab
  • x2+y22ax+2by=2ab
  • x2+y22ax+2by=ab
  • x2+y22ax+2by=ab
The foci of a hyperbola with the foci of the ellipse x225+y212=1. Find the equation of the hyperbola, if its eccentricity is 2.
  • x24y212=1
  • x24y212=2
  • x29y212=1
  • None of these
If x2+y22x+2ay+a+3=0 represents a real circle with non-zero radius, then most appropriate is
  • a(,0)
  • a(1,2)
  • a(2,)
  • a(,1)(2)
Find the equation of a circle whose cemtre is (2,1) and radius is 3
  • x2+y2+4x2y+4=0
  • x2+y24x+2y4=0
  • x2+y2+4x+2y4=0
  • x2+y2+2x4y4=0
0:0:2


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