Circle And System Of Circles Question 271
Question: The radical axis of two circles and the line joining their centres are
[Karnataka CET 2001]
Options:
A) Parallel
B) Perpendicular
C) Neither parallel, nor perpendicular
D) Intersecting, but not fully perpendicular
Show Answer
Answer:
Correct Answer: B
Solution:
We know that the radical axis of two circles is the locus of a point which moves in such a way that the lengths of the tangents drawn from it to the two circles are equal. It is a line perpendicular to the line joining the centres of two circles.
BETA
