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Byju's Answer
Standard XII
Mathematics
Intercept Made by Circle on Axes
The radical c...
Question
The radical centre of the circles drawn on the focal chords of the parabola
y
2
=
4
a
x
as diameters is
A
(
−
a
,
0
)
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B
(
a
,
0
)
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C
(
0
,
0
)
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D
(
a
,
a
)
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Solution
The correct option is
B
(
0
,
0
)
Given equation of parabola is
y
2
=
4
a
x
Vertex is at
(
0
,
0
)
We know that "The radical axis of the two circles described on any two focal chords as diameters, passes through the vertex of the parabola"
So, the radical centre is
(
0
,
0
)
.
Suggest Corrections
0
Similar questions
Q.
Circles are drawn taking any two focal chords of the parabola
y
2
=
4
a
x
as diameters. If
t
1
,
t
3
represent any one end of the different focal chords, then, the equation of the common chord of the circles is
Q.
Assertion :The locus of the center of the circle described on any focal chord of a parabola
y
2
=
4
a
x
as diameter is
y
2
=
2
a
(
x
−
a
)
Reason: If
A
(
a
t
2
1
,
2
a
t
1
)
and
B
(
a
t
2
2
,
2
a
t
2
)
be the extremities of a focal chord for the parabola
y
2
=
4
a
x
,
then
t
1
t
2
=
−
1
Q.
The locus of the center of the circle described on any focal chord of a parabola
y
2
=
4
a
x
as diameter is
Q.
Circles are drawn taking any two focal chords of the parabola
y
2
=
4
a
x
as diameters. If
t
1
,
t
3
represent any one end of the different focal chords, then, the equation of the common chord of the circles is
Q.
Circle drawn with a focal chord of the parabola
y
2
=
4
x
+
y
+
4
as diameter will always touch the line
16
x
+
k
=
0
,
where
k
equals to :
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