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Draw a diagram to show how white light can be dispersed into a spectrum by using a glass prism. Mark the various colours of the spectrum.
The diagram shows how white light can be dispersed into a spectrum by using a glass prism. The various colours of the spectrum are shown in the diagram.
Extra information for reference only.
The phenomenon of splitting white light into its components colours (violet, indigo, blue, green, yellow, orange and red) while passing through a prism is known as the Dispersion of light. In the spectrum, red is seen at the top as it has the longest wavelength whereas violet is seen at the bottom of the spectrum as it has the shortest wavelength.
The cause of the dispersion of light through the prism is because white light is a mixture of seven different colours and they get refracted (bend) at different angles in the prism medium due to differences in their speed and wavelengths. So they get separated.
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