The reflection of Lin Yao at the
back of the spoon must be an upright reflection of himself. The back of the
spoon is the convex side. When Lin Yao will look at the inner side of the
spoon, his reflection will be inverted. This is because the inner side of the
spoon is the concave side.
it also depends on what side you are looking at if you look at the back side it a normal mirror but if you look at the front its upside down and smaller
