Three Polarizing Sheets Are Placed in a Stack with the Polarizing

question 37

Multiple Choice

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

---

Definitions:

Train

A series of connected vehicles traveling on railways, used for transporting people or cargo.

Biscuit

A small baked product that varies in texture and taste based on geography, ranging from hard and flat to soft and flaky.

Positive Punishment

The presentation of a stimulus following a given behavior in order to decrease the frequency of that behavior.

Operant Conditioning

A method of learning that employs rewards and punishments for behavior. Through operant conditioning, an individual makes an association between a particular behavior and a consequence (either a reward or punishment).