List of top Mathematics Questions on Circle asked in WBJEE JENPAS UG

The number of common tangents to the circles \[ x^2+y^2-4x-6y-12=0,\quad x^2+y^2+6x+18y+26=0 \] is:
Let \( x-y=0 \) and \( x+y=1 \) be two perpendicular diameters of a circle of radius \( R \). The circle will pass through the origin if \( R \) equals:
The maximum number of common normals of \( y^2 = 4ax \) and \( x^2 = 4by \) is: