you are standing in a pond. Your friend tries to sneak up on you, but you see him coming.you see him in the pond ....why?
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Answer: It is so simple man..it is all due to Reflection
Explanation:This is because a water surface is neither a perfect mirror nor perfectly invisible. Part of the light rays from you are reflected on the water surface, so that you can see your image. A part of the light rays reaching the bottom of the pond are scattered by the objects there and also fall into your eyes. Thus you can also see said bottom. The principle, by the way, is used in head-up displays as well.
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