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(C) The relationship between the refractive index $\mu$ and the wavelength $\lambda$ of light is given by Cauchy's dispersion formula,which is approxi

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(C) The relationship between the refractive index $\mu$ and the wavelength $\lambda$ of light is given by Cauchy's dispersion formula,which is approximately $\mu = A + \frac{B}{\lambda^2}$,where $A$ and $B$ are constants.This equation shows that as the wavelength $\lambda$ increases,the refractive index $\mu$ decreases.Graphically,this represents a curve that starts at a high value of $\mu$ for small $\lambda$ and decreases as $\lambda$ increases,asymptotically approaching a constant value $A$ as $\lambda \rightarrow \infty$.Among the given options,the curve in option $C$ represents this inverse relationship correctly.Therefore,option $C$ is the most suitable.

Which of the following curves gives the correct graphical representation between the refractive index $\mu$ of glass and the wavelength $\lambda$ of light?

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