Headmaster (Secondary School) -2018 A mirage is an optical phenomenon caused by the bending of light rays (refraction) due to variations in air density, which are primarily caused by temperature differences. In the case of inferior mirages seen on hot surfaces (like roads or deserts), light from the sky passes from cooler, denser air to hotter, less dense air near the surface. As light bends away from the normal, it can reach a critical angle and undergo total internal reflection, causing an inverted image of the sky (which looks like water) to be seen.
Mirage is an example of :
Asked in UPPCS Prelims 1995 · Topic: Optics (Total Internal Reflection and applications)
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