Question

The graph which represents the relation between refractive index $\mu$ with wavelength $\lambda$ is

• A.
• B.
• C.
• D.

Answer 1

Answer: (D)

Since, from Cauchy's relation
$\mu =A+\frac{B}{{\lambda }^2}$
$\Rightarrow \mu \propto \frac{1}{{\lambda }^2}$