Question

define mirage and explain the formation of the mirage with an activity​

Answer 1

Answer:

The definition of a mirage is an optical illusion, something that you believe you see but that isn't really there. An example of a mirage is when you believe you see water or a ship in the desert when it isn't really there. "Mirage."

Answer 2

Answer:

• Mirage is an optical illusion where it appears that water has collected on the road at a distant place but when we get there, we don't find any water.

• The formation of a mirage is the best example where refractive index of a medium varies throughout the medium.

• During a hot summer day, air just above the road surface is very hot and the air at higher altitudes is cool. It means that the temperature decreases with height. As a result density of air increases with height. We know that refractive index of air increases with density. Thus the refractive index of air increases with height.
• So, the cooler air at the top has greater refractive index than hotter air just above the road. Light travels faster through the thinner hot air than through the denser cool air above it.

Explanation:

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