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प्रश्न
Draw a neat diagram for the dispersion of white light by a prism and label all the colours of the spectrum.
आकृती
लघु उत्तर
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उत्तर
Allow white light to pass through a glass prism. The emergent band on the screen is the visible spectrum. The colours appear in the order:
VIBGYOR
- Violet: most deviated
- Indigo
- Blue
- Green
- Yellow
- Orange
- Red: least deviated
Red travels fastest in glass and is refracted least; violet travels slowest in glass and is refracted most. Therefore the prism separates white light into its component colours.
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