An Unclad Optical Fiber Has Index of Refraction 1

question 21

Multiple Choice

An unclad optical fiber has index of refraction 1.70. What is the acceptance angle for this fiber? The acceptance angle is the greatest angle at which the light enters the end of the fiber and still causes total internal reflection.

• A) 38.7°
• B) 51.3°
• C) 39.7°
• D) Any angle will be accepted.

---

Definitions:

Low-Ball Technique

A persuasion strategy in which an initial, lower price is offered to secure agreement, then raised before the deal is closed.

Bait-And-Switch

A deceptive marketing strategy in which a customer is lured by the advertisement of a low-priced item but then is encouraged to buy a more expensive one.

Door-In-The-Face Technique

The Door-In-The-Face Technique is a persuasion strategy where a larger request is initially made and rejected, followed by a smaller, more reasonable request.

Unreasonable Request

A demand made that is not grounded in logic or fairness, often placing undue burden on others.