One end of a long glass rod (n = 1.50) is formed into a convex surface with a radius of curvature of magnitude 7.80 cm. An object is located in air along the axis of the rod. (a) Find the image position corresponding to object distance of 23.0 cm from the convex end of the rod. s x Your response differs from the correct answer by more than 10%. Double check your calculations. cm (b) Find the image position correspending to object distance of 9.1 cm from the convex end of the rod. cm (c) Find the image position corresponding to object distance of 3.9 cm from the convex end of the rod. cm (d) Find the image position corresponding to object distance of 2.00 cm from the convex end of the rod. cm