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Math 12 Chapter 6
Conic Section
Test - 10
1.
The point (x
1
,y
1
) lies inside the circle if x
1
2
+y
1
2
+2gx
1
+2fy
1
+c = 0
a) False
b) True
2.
The perpendicular at outer end of a radial segment is tangent to the circle.
a) False
b) True
3.
A line segment whose end points lie on a circle is called diameter of the circle.
a) True
b) False
4.
Length of a diameter of a circle x
2
+ y
2
= a
2
is ''a''
a) True
b) False
5.
If e @ 1, then conic is parabola.
a) False
b) True
6.
If e # 1, then conic is ellipse.
a) False
b) True
7.
The line joining the center of a circle to the mid point of a chord is perpendicular to the chord .
a) False
b) True
8.
An angle of a semi-circle is a right angle.
a) True
b) false
9.
x
2
/a
2
+ y
2
/a
2
=1 isequation of an ellipse.
a) True
b) False
10.
The equation y = mx + a (1+m
2
)
1/2
is a tangent to a circle x
2
+y
2
+2gx+2fy+c = 0
a) False
b) True
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