Qus : 2
4 For the two circles $x^2+y^2=16$ and $x^2+y^2-2y=0$, there is/are
1 One pair of common tangents 2 Two pair of common tangents 3 Three pair of common tangents 4 No common tangents Go to Discussion
Qus : 3
2 The number of common tangents to the circle $x^2+y^2=4$ and $x^2+y^2-6x-8y=24$ is
1 0 2 1 3 3 4 4 Go to Discussion
Solution Qus : 4
1 The point of intersection os circle
and the line
is
1 (-6, 3) 2 (3,-6) 3 (6,-3) 4 (-3,6) Go to Discussion
Solution Qus : 5
3 The circles whose equations are
and
will touch one another externally, if
1 2 3 4 None of these Go to Discussion
Solution Qus : 7
2 Find the number of point(s) of intersection of the
ellipse
and the circle x
2 + y
2 = 4
1 4 2 3 3 2 4 1 Go to Discussion
Solution Qus : 8
1 A circle touches the X-axis and also touches another circle with centre at (0, 3) and radius 2.
Then the locus of the centre of the first circle is
1 a parabola 2 a hyperbola 3 a circle 4 an ellipse Go to Discussion
Solution Qus : 9
1 The radius of the circle passing through the foci of the ellipse $\frac{x^2}{16}+\frac{y^2}{9}$and having it centre
at (0, 3) is
1 $4$ units 2 $3$ units 3 $\sqrt{12}$ units 4 $\frac{7}{2}$ units Go to Discussion
Solution Qus : 10
2 If two circles
$x^{2}+y^{2}+2gx+2fy=0$ and $x^{2}+y^{2}+2g'x+2f'y=0$ touch each other then whichof the following is true?
1 $gf=g'f'$ 2 $g'f=gf'$ 3 $gg'=ff'$ 4 None of these Go to Discussion
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