An Optic Fiber Is Made of Clear Plastic with Index

question 21

Multiple Choice

An optic fiber is made of clear plastic with index of refraction of 1.50,surrounded by air.For what angles of incidence θ will light remain within the plastic fiber?

• A) θ ≥ 21.1°
• B) θ < 38.3°
• C) θ > 38.3°
• D) θ < 41.8°
• E) θ > 41.8°

---

Definitions:

Protein

Large, complex molecules essential to the structure, function, and regulation of the body's tissues and organs, made up of amino acids.

Appetite

The natural desire or need to eat food, influenced by both physiological and psychological factors.

Snacks

Small portions of food generally eaten between regular meals, often to alleviate hunger or provide energy.

Nutritional Assessment

The analysis of various health factors to determine a person's nutritional status and dietary needs.