Question

the Refractive index depend upon
the
Propagation of elight
different medi​

Answer 1

Answer:

In some materials the refractive index depends on the polarization and propagation direction of the light. This is called birefringence or optical anisotropy. In the simplest form, uniaxial birefringence, there is only one special direction in the material. This axis is known as the optical axis of the material.