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MHT CET Physics question

PhysicsWave OpticsMHT CET

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 [JEE (Main) 2015]

Answer: (D)

Solution

Light travels fastest where the refractive index is smallest, so the lower part of the wavefront advances faster than the upper part and

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Question ID VK-077271