A periscope (see figure below) is useful for viewing objects that cannot be seen directly. It can be used in submarines and when watching golf matches or parades from behind a crowd of people. Suppose the object is a distance p1 from the upper mirror and the centers of the two flat mirrors are separated by a distance h. (a) What is the distance of the final image from the lower mirror? (Use any variable or symbol stated above as necessary.) d = behind the lower mirror (b) Is the final image real or virtual? real virtual (c) Is it upright or inverted? upright inverted (d) What is its magnification?