The refractive index of a solid is observed to have the same value along all direction. Comment on the nature of this solid. Would it show cleavage property?

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

The physical property (ies) which (is) are same along all the directions in an isotropic solid-

If refractive indedx is found to be same in all directions through a solid, then this propery is called ______

Pulfrich refractometer is used to measure the refractive index of solids and liquid. It consist of right angled prism. A having its two faces perfectly plane. One of the face is horizontal and the other is vertical as shown is figure. The solid B whose refractive index is to be determined is taken having two faces cut perpendicular to one another. Light is incident in a direction parallel to the horizontal surface so that the light entering the prism A is at critical angle C. Finally, it emerges from the prism at an angle i. Let the refractive index of the solid be mu and that of the prism A be mu_(0) (which is known). Here mu_(0)gtmu and by measuring i, mu can be determinged. Q. Refractive index of the solid (mu) in terms of mu_(0) and i is

Pulfrich refractometer is used to measure the refractive index of solids and liquid. It consist of right angled prism. A having its two faces perfectly plane. One of the face is horizontal and the other is vertical as shown is figure. The solid B whose refractive index is to be determined is taken having two faces cut perpendicular to one another. Light is incident in a direction parallel to the horizontal surface so that the light entering the prism A is at critical angle C. Finally, it emerges from the prism at an angle i. Let the refractive index of the solid be mu and that of the prism A be mu_(0) (which is known). Here mu_(0)gtmu and by measuring i, mu can be determinged. Q. Refractive index of the solid (mu) in terms of mu_(0) and i is