An Optic Fiber Is Made of Clear Plastic with an Index

question 60

Multiple Choice

An optic fiber is made of clear plastic with an index of refraction of 1.50.For what range of angles of incidence θ with the lateral surface of the fiber will light remain inside the plastic "guide" if it is surrounded by air?

• A)21.1° < θ < 90°
• B)23.4° < θ < 90°
• C)38.3° < θ < 90°
• D)40.3° < θ < 90°
• E)41.8° < θ < 90°

---

Definitions:

Strange Situation

A structured observational technique used by psychologists to assess patterns of attachment in children.

Mary Ainsworth

A developmental psychologist known for her work on attachment theory, which focuses on the bonds between children and their caregivers.

Attachment

An emotional bond that typically forms between infants and their caregivers, profoundly influencing the child's development and future relationships.

Strange Situation

A research method developed by Mary Ainsworth to assess the quality of attachment relationships between infants and their caregivers through a series of introductions, separations, and reunions.