The Sunlight is actually white in colour, but it's a mixture of seven different coloured lights of different wavelengths, and when sunlight is passed through a prism, it splits into its constituent units forming a spectrum when observed on a screen. And this shows that the Sunlight is composed of seven different coloured lights .
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They are :
- Red ( highest wavelength )
- Orange
- Yellow
- Green
- Blue
- Indigo
- Voilet ( lowest wavelength )
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