1. Does the mirror equation (p^-1 + d^-1 = 2R^-1 = f^1) apply to a plane mirror? What relationship between p and d does it imply?
2. Why is it when you stand in front of a mirror your left appears on your right and your right on your left but you do not appear to be upside down?
3. A person spearfishing from a boat sees a fish that is 3 m from the boat at the depth of 1m. In order to spear the fish, should the person aim at, above, or below the image of the fish?