1
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If the angle between the circles

$$ x^2+y^2-2 x-4 y+c=0 \text { and } x^2+y^2-4 x-2 y+4=0 $$

is $60^{\circ}$, then $c=$

A
$\frac{3 \pm \sqrt{5}}{2}$
B
$\frac{6 \pm \sqrt{5}}{2}$
C
$\frac{7 \pm \sqrt{5}}{2}$
D
$\frac{9 \pm \sqrt{5}}{2}$
2
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The normal at a point on the parabola $y^2=4 x$ passes through $(5,0)$. If there are two more normals to this parabola passing through $(5,0)$, then the equation of one of these normals is

A
$2 x-y-10=0$
B
$x+y-5=0$
C
$\sqrt{3} x+2 y+5 \sqrt{3}=0$
D
$\sqrt{3} x-y-5 \sqrt{3}=0$
3
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The equations of common tangents to the parabola $y^2=16 x$ and the circle $x^2+y^2=8$ are

A
$y=x+2, y=x-2$
B
$y=x+1, y=x-2$
C
$y=2 x+4, y=-2 x+4$
D
$y=x+4, y=-x-4$
4
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The product of the lengths of the perpendiculars drawn from the two foci of the ellipse $\frac{x^2}{9}+\frac{y^2}{25}=1$ to the tangent at any point on the ellipse is

A
6
B
7
C
8
D
9
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