1. There is an interesting optical effect you have likely noticed while driving along a flat stretch of road on a sunny day. A small, distant dip in the road appears to be filled with water. You may even see the reflection of an oncoming car. But, as you get closer, you find no puddle of water after all; the shimmering surface vanishes, and you see nothing but an empty road. It was only a mirage, the name for this phenomenon. Explain this phenomenon. (Ray diagram and conceptual explanation should be included)