Question

What happen if the ordinary unpolarised light is passed through a Uniaxial crystal
(A) Light is split into two ravs
(B) Light remain unaffected
(C) Light is split into more than two rays
(D) None of them
if they travel along the optic Axis?​

Answer 1

PLZ MARK ME AS BRAINLIST PLZ

Answer 2

Explanation:

Light is split into two rays

Uniaxial minerals are a class of anisotropic minerals that include all minerals that crystallize in the tetragonal and hexagonal crystal systems.  They are called uniaxial because they have a single optic axis.  Light traveling along the direction of this single optic axis exhibits the same properties as isotropic materials in the sense that the polarization direction of the light is not changed by passage through the crystal.  Similarly, if the optic axis is oriented perpendicular to the microscope stage with the analyzer inserted, the grain will remain extinct throughout a 360o rotation of the stage.  The single optic axis is coincident with the c-crystallographic axis in tetragonal and hexagonal minerals.  Thus, light traveling parallel to the c-axis will behave as if it were traveling in an isotropic substance because, looking down the c-axis of tetragonal or hexagonal minerals one sees only equal length a-axes, just like in isometric minerals.