why does the white light split on the first refracting face of prism
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white light has 7 different colors of different wavelength. they travell in air with the same speed . however there speed changes in other medium as they have different wavelengths. the differential change of theit speed on entering the prizm cause the white light to split into 7 .
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white light is a combination of 7 colours. when it is passed through prism, they are refracted. all colours have different wavelengths. since they have different wavelengths, they are dispersed.
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