The refractive index of air is close to 1 because light travels through air:
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Correct Answer: Option D
Explanation:
Air has very low optical density compared to liquids and solids. Because light travels through air almost as fast as it does in vacuum, the refractive index of air is very close to 1.
Air has very low optical density compared to liquids and solids. Because light travels through air almost as fast as it does in vacuum, the refractive index of air is very close to 1.