1Have you ever seen an illusion of a pool of still water on a pitched road while travelling on a summer day? What causes it?
2What effect would be observed when sound waves undergo refraction in the same way as light waves do during the formation of a mirage?
3Why does a diamond sparkle?
4Why does a piece of glass cut with faces like a diamond not sparkle like a diamond?
5Why does an air bubble inside water shine when seen from outside?
6Why does the immersed part of an empty test tube, slanted in water, look shiny? What happens if the tube is filled with water?
7Above a hot road, which layer of air is the denser medium and which is the rarer medium? Why?
8Why is the image seen in a mirage inverted, and why does it flicker?
9Why is a distant sound not heard clearly during the day?