What do you understand by the statement the refractive index of glass is 1.5 for white light

$What do you understand by the statement the refractive index of glass is 1.5 for white light$

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What do you understand by the statement the refractive index of glass is 1.5 for white light?

The refractive index of glass is 1.5 for white light means white light travels in air 1.5 times faster than in glass.

Concept: Refractive Index

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