another refraction question?? The left end of a long glass rod 6.00 cm in diameter has a convex hemispherical surface 3.00 cm in radius. The refractive index of the glass is 1.60. Determine the position of the image if an object is placed in air on the axis of the rod at the infinitely far distance to the left of the vertex of the curved end. what does that mean? so is the distance of the object at infinity? I drew a picture for this problem, however the wording is confusing Maybe you might be able to tell me what they mean about the distance of the actual object?? Thankss!