Define:Spectrum and Refractive index.
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Spectrum is a band of colors, as seen in a rainbow and is produced by a separation of the components of light by their different degrees of refraction according to wavelength. It is a condition that is not limited to a specific set of values.
Refractive index can be defined as the ratio of speed of light in vacuum to the speed of light in the specific medium given.
Example: refractive index on water is : 1.333 approx.
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Explanation:
The concept of refractive index applies within the full electromagnetic spectrum, from X-rays to radio waves. It can also be applied to wave phenomena such as sound. In this case the speed of sound is used instead of that of light, and a reference medium other than vacuum must be chosen.
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