Imported Model (.FBX), collider and touch point.

I imported an FBX model containing meshes (i.e. book pages) and I selected “Generate Colliders”. Whenever I use the
Physics.Raycast () to get the touch point on one of the mesh I get no point as if the mesh is not there. What am I doing wrong here? Thanks!

Please see an attached screenshot from Unity3D with the imported meshes.

can you clarify what you mean by touch point? is this for a touchscreen device?