Three polarizing sheets are placed in a stack with the polarizing directions of the first and third perpendicular to each other.Which of the following angles should the polarizing direction of the middle sheet make with the polarizing direction of the first sheet to obtain zero transmitted intensity when unpolarized light is incident on the stack?
A)0°
B)30°
C)45°
D)60°
E)all angles allow light to pass through

Question

Quizplus · Accepted Answer

When the polarizing directions of the first and third sheets are perpendicular to each other, the middle sheet must be at 0° to the first sheet to obtain zero transmitted intensity.

Three Polarizing Sheets Are Placed in a Stack with the Polarizing