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1. What is dispersion? Explain in detail.
Splitting into its (wavelength), by passing it through a is known as dispersion of light.
The light of different colours present in white light has , and they travel at in a medium.
The refraction of a light ray in a medium depends on its . Moreover, the refraction of a light ray is to its wavelength.
Thus, the red coloured light, which has a , is deviated while the violet coloured light, which has a , is deviated .
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