What is "dispersion of white light"? Draw a labelled diagram to illustrate the recombination of the spectrum of white light. Why is it essential that the two prisms used for the purpose should be identical and placed in an inverted position with respect to each other?
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explanation and diagram above
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The different components of white light deviate from different angles when it passes through a triangular glass prism. It happens because the light is made up of seven different colors and when they hit the prism they act differently. After hitting the prism, the white light gets dispersed into its constituent lights depending on the refractive index of each wavelength.
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