How is apparent depth and real depth related to refractive index?Figure shows two opaque cups, A and B. Cup A is partially filled with water and cup B is totally filled with water. A similar coin is placed at the bottom of each cup.When observing from the same position, the coin in cup A cannot be seen, but the coin in cup B can be seen. With more water in the … [Read more...] about How is apparent depth and real depth related to refractive index?