alleryDispersion happens because the refractive index differs with:
AFirmness
BFineness
CFrequency
DFluidity
Answer & Solution
Correct answer: C. Frequency
1. White light splits into colours through a prism.
2. Dispersion takes place because the refractive index of a medium for different frequencies is different.
3. So the correct answer is frequency.
_Source: syllabus Physics Part II, Ch 9 'Ray Optics and Optical Instruments'_
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