dispersion hard

Question

Dispersion in prism occurs because refractive index varies with:

RankGuru · Accepted Answer

**Dispersion** is the splitting of white light into its constituent colors.
- This happens because the speed of light in a medium (and thus the refractive index $n$) depends on the wavelength (colors).
- According to **Cauchy's formula**: $n(\lambda) = A + \frac{B}{\lambda^2} + ...$
- Shorter wavelengths (Violet) experience a higher refractive index and bend more than longer wavelengths (Red).

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dispersion hard

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