Minimum radius of circle which is orthogonal with both the circles 
and 
is
a)
4
b)
3
c)
d)
1
Minimum radius of circle which is orthogonal with both the circles and is
a)
4
b)
3
c)
d)
1
Question ID - 55981 | SaraNextGen Top Answer
Minimum radius of circle which is orthogonal with both the circles and is
a)
4
b)
3
c)
d)
1
|
Minimum radius of circle which is orthogonal with both the circles |
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|
a) |
4 |
b) |
3 |
c) |
|
d) |
1 |
1 Answer
127 votes
Answer Key / Explanation : (c) -
(c)
…(i)
…(ii)
Equation of radical axis of circles (i) and (ii) is
It intersects the line joining the centres, i.e. 
at the point (2, 0)
Required radius 
(length of tangent from (2, 0)
127 votes
Answer Link
127