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Refractive Index and Its Measurement
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What is the refractive index of a material?
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A
The ratio of the speed of light in vacuum to the speed of light in the material
💡 Explanation:
The refractive index (n) of a material is defined as the ratio of the speed of light in vacuum (c) to the speed of light in the material (v). It is expressed as n = c/v.