Published by:
CGP EDU Academic Team
Published on: August 13, 2026
A variable circle passes through the fixed point 
and touches 
axis. The locus of the other
end of the diameter through 
is 
Find 
.
Text Solution
Verified by ExpertsThe correct answer is:
4
4 JEE Main 2020
Equation of circle having 
as diameter is
or 
Putting 
, we get 
Since, circle 
touches 
-axis
Discriminant of equation 
Locus of 
is 
or 
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