Question

Refractive index of the medium isµ and wavelength is λ, then which of the following proportionality relation is correct?

Options

• µ ∝ λ²

• µ ∝ \[\frac{1}{\lambda}\]

• µ ∝ λ

• µ ∝ \[\frac{1}{\lambda^2}\]

Answer 1

µ ∝ \[\frac{1}{\lambda}\]

Explanation:

The refractive index of a medium,

`mu = "c"/"v" = "c"/("v"lambda)`

`therefore mu prop 1/lambda`