Question

does the value of polarising angle depend on colour of light?

Answer 1

The refractive index of a material depends on the wavelength of the light. As the polarising angle depends on the refractive index, it also depends on the wavelength of the light.

Answer 2

The refractive index of a material depends upon it's lengthy or wavelength of light . As the polarising angle depends upon the refractive index , it also depends upon the wavelength of light .