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| 1. |
Explain spectrum and dispersion briefly |
| Answer» Dispersion—The splitting of white light into its component colours is known as dispersion. White light contains many wavelengths ( it contains lights of many wavelengths(colours)).Since their wavelengths are different, their speeds are different in a medium, but in vacuum all the wavelengths travel with the same speed. In a material medium, the speed of different wavelengths are diferent. So when a beam of white light passes through a medium, the material medium splits the white light into different components. This phenomenon is called dispersion.\xa0Spectrum-The band of the coloured components of a light beam is called its spectrum. | |