The Figure Shows a Point Source of Unpolarized Light at a Inside

question 63

Multiple Choice

The figure shows a point source of unpolarized light at A inside a uniform transparent crystal. The ray AO in the crystal strikes the plane surface SS' making an angle of 30° with the normal. This angle is the critical angle for transmission into air.
-Which one of the following statements is true concerning this situation?

• A)When the angle of incidence is equal to the Brewster angle, the angle of refraction is 13°.
• B)When the angle of incidence is equal to the Brewster angle, the angle of refraction is 63°.
• C)When the angle of incidence is equal to the Brewster angle, the angle of refraction is 42°.
• D)Since the Brewster angle is less than the critical angle, there is no refraction when the angle of incidence is equal to \(\theta\)_B.
• E)Since the Brewster angle is greater than the critical angle, there is no refraction when the angle of incidence is equal to \(\theta\) _B.

---

Definitions:

Aqueous Solution

A solution in which water is the solvent.

pH

A measure of the acidity or alkalinity of a solution, defined as the negative logarithm of the hydrogen ion concentration.

Alanine

A non-essential amino acid used in protein synthesis, involved in glucose metabolism and immune system function.

Fischer Projection

A method to represent molecules in 2D by projecting three-dimensional configurations.