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Math 12 Chapter 6
Conic Section
Test - 9
1.
Length of latus rectum of ellipse x
2
/ a
2
+ y
2
/ b
2
= 1
a) 2b
2
/x
b) 2b/a
c) 2b
2
/a
d) b
2
/a
2.
Length of latus rectum of hyperbola x
2
/ a
2
- y
2
/ b
2
= 1
a) b
2
/a
b) b/a
c) a
2
/b
d) b/a
2
3.
Length of transverse axis of x
2
/ a
2
- y
2
/ b
2
= 1
a) xy
b) 2b
c) ay
d) 2a
4.
Length of semi-minor axis of x
2
/ a
2
+ y
2
/ b
2
= 1
a) b
b) x
c) y
d) a
5.
The tangent line to a circle at any point is
a) Centre
b) Parabola
c) Ellipse
d) Unique
6.
Fore = 1
a) Ellipse
b) Latus ractum
c) Parabola
d) Hyperbola
7.
Vertex of y
2
= 6(x+3)
a) (-0,0)
b) (-3,0)
c) (-0,3)
d) (0;-3)
8.
Centre of x
2
/16+(y+3)
2
/9 =1
a) (3-0)
b) (0,3)
c) (-3;0)
d) (0,-3)
9.
Directrix of y
2
= 12x is
a) x = 3
b) y = 4
c) x = 4
d) y = 3
10.
x = a cos
q
, y = b sin
q
a) Circle
b) Parabola
c) Ellipse
d) Hyperbola
11.
Eqn. of tangent line to x
2
/9+y,sup>2/12=1at point (3,4)
a) 2x + 2y = 0
b) x + y = 0
c) x + y = 3
d) 3x + 3y = 0
12.
Normal to the circle x
2
+y
2
=10 at point (5,5) is
a) 2x - 2y = 0
b) y - x = 0
c) x - y = 0
d) x + y = 1
13.
The centricity of x
2
/2-y
2
=1
a) 2/3
b) 1/3
c) 3/2
d) 2/2
14.
Latus rectum of x
2
/9+y
2
/6=1
a) 1
b) 2
c) 4
d) 3
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