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What is spectrum? Draw a labelled diagram to show the formation of spectrum. Name the various colours of spectrum.
The spectrum is the colour band obtained on a screen when a beam of white light passes through a glass prism.
It happens because the different colour of white light bend or are refracted towards the normal through different angles.
The various colours of the spectrum obtained on the screen in order are:
1. Violet,
2. Indigo,
3. Blue,
4. Green,
5. Yellow,
6. Orange, and
7. Red.
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