JEE Main 202117 Mar, Morning shiftMathematicsMediumCoordinate Geometry478× since 2002
The line 2x y + 1 = 0 is a tangent to the circle at the point (2, 5) and the centre of the circle lies on x 2y = 4. Then, the radius of the circle is :
JEE Main 2021 · 17 Mar, Morning shift · Q3129