4. A cylindrical glass rod has index of refraction 1.52. It is surrounded by air. One end is ground to a hemispherical surface with radius R = 2.00 cm. A small object is placed on the axis of the rod, 8.00 cm to the left of the vertex. Find (a) the image distance and (b) the lateral magnification. na = 1.00 (air) P K=8.00 cm- R = 2.00 cm пр 1.52 P'