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White light splits into its colours when passed through a prism. This phenomenon is called:
AReflection
BRefraction
CDiffraction
DDispersion
Answer & Solution
Correct answer: D. Dispersion
1. A prism refracts light by different amounts for different wavelengths.
2. The white light spreads into the colours of the rainbow.
3. This splitting of a single beam into its components is called dispersion.
4. Refraction is the change of direction; dispersion is the splitting itself.
_Source: NCERT Class 10 Science Ch 11 'Human Eye and the Colourful World'_
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