What is spectrum of white light ? Why do different coloured rays deviate at different angles on passing through a glass prism ? Explain the method of recombining the different components of white light.
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The band of the coloured components of white light. Refractive index speed of light is different for different colours. By placing a second identical prism in an inverted position with respect to first prism (Proper explanation is to be given) diagram with labelling.
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