if refractive index of glass is 1.5 ,then what does it mean
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Explanation:
Refractive index of glass is 1.5 .This means that the speed of light in glass is 1.5 times slower than the speed of light in vacuum.
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It means that light moves 1.5 times slower in glass (denser medium) as compared to air/vacuum (rarer medium).
Speed of light is maximum in vacuum.
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