When white light enters a prism,it gets split | vedclass

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(B) The phenomenon of splitting white light into its constituent colours is called dispersion. The refractive index $\mu$ of the prism material depend

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Because $\mu$ is different for different $\lambda$

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(B) The phenomenon of splitting white light into its constituent colours is called dispersion. The refractive index $\mu$ of the prism material depends on the wavelength $\lambda$ of the light,as given by Cauchy's equation $\mu(\lambda) = A + B/\lambda^2 + ...$. Since different colours have different wavelengths,they experience different refractive indices $\mu$ within the prism. Consequently,each colour undergoes a different angle of deviation according to the prism formula $\delta = (\mu - 1)A$. Thus,the correct reason is that $\mu$ is different for different $\lambda$.

When white light enters a prism,it gets split into its constituent colours. This is due to

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