What is dispersion of light?
PhysicsClass 10CBSEAnswered 28 May 2026
Answer
Dispersion is the splitting of white light into its constituent colours (VIBGYOR) when passing through a prism.
- Different colours have different wavelengths → different refractive indices → different bending.
- Violet bends most; red bends least.
Examples: Rainbow, prism spectrum, diamond sparkle, oil slick colours.
Dispersion splits white light into seven colours through a prism because each wavelength refracts by a different amount.
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