Physics - Geometrical Optics Question with Solution | TestHub

According to Snell's law, $\frac{\sin i}{\sin r}=\mu$, where $\mu$ is the refractive index of the medium.

The refractive index of a medium depends on the wavelength of light according to Cauchy's relation $\mu =A+\frac{B}{{\lambda }^2}$.

Since different colours of light have different wavelengths, the refractive index $\mu$ is different for different colours.

Therefore, for a given angle of incidence $i$, the angle of refraction $r$ will be different for different colours.

Answer: angle of refraction is different for different colours.