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

question 48

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.

-Determine the index of refraction of the crystal.

• A)0.58
• B)1.2
• C)1.7
• D)2.0
• E)2.4