Question

Refractive index of a solid is observed to have the same value along all directions. Comment on the nature of the solid. Would it show cleavage property?

Answer 1

As the solid have same values of refractive index among all directions, it means it is isotropic in nature. Hence, the solid is amorphous. As the solid is amorphous in nature so it would not show clean cleavage when cut with a knife. It would break in to pieces with irregular surfaces.