In Snell's law of refraction, the refractive index of the second medium with respect to the first medium ($n_{21}$) is |
a characteristic of the medium 1 only a characteristic of the medium 2 only independent of the angle of incidence. not dependent on the wavelength of light |
independent of the angle of incidence. |
The correct answer is Option (3) → independent of the angle of incidence. |