On a hot summer night, the refractive index of air is smallest near the ground and increases with height from the ground. When a light beam is directed horizontally, the Huygen's principle leads us to conclude that as it travels, the light beam:

On a hot summer night, the refractive index of air is smallest near th

1.	On a hot summer night, the refractive index of air is smallest near the ground and increases with height from the ground. When a light beam is directed horizontally, the Huygen's principle leads us to conclude that as it travels, the light beam:
Answer» BECOMES narrower goes HORIZONTALLY WITHOUT any deflection bends downwards bends UPWARDS Solution : Ray 2 will travel faster than 1, so beam bends upwards.

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On a hot summer night, the refractive index of air is smallest near the ground and increases with height from the ground. When a light beam is directed horizontally, the Huygen's principle leads us to conclude that as it travels, the light beam:

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