Refractive index of the medium is ' $\mu$ ' and wavelength is $\lambda$, then which of th wing…

Refractive index of the medium is ' $\mu$ ' and wavelength is $\lambda$, then which of th wing proportionality relation is correct?
  1. $\mu \propto \frac{1}{\lambda^{2}}$
  2. $\mu \propto \lambda^{2}$
  3. $\mu \propto \frac{1}{\lambda}$
  4. $\mu \propto \lambda$

Solution

$\mu=\frac{c}{v}=\frac{v \lambda_{0}}{v \lambda} \quad \therefore \mu \propto \frac{1}{\lambda}$

Asked in: MHT CET 2020 (16 Oct Shift 2)

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