Question

A traveller was lost in the desert.he thought he saw a mirage at a distance but was mistaken. What is it? Give reason

Answer 1

When appearing on roads due to the hot asphalt, it is often referred to as a highway mirage.

Convection causes the temperature of the air to vary, and the variation between the hot air at the surface of the road and the denser cool air above it creates a gradient in the refractive index of the air.

Reason:Its formation is a result of the refraction and the total internal reflection of light in the air. To investigate the formation of a mirage, we firstly need to understand why light is refracted in the air. Regions of air at different temperatures have different refractive indexes, just like many different mediums.

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