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°

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Definitions:

Unconditional Positive Regard

A term in client-centered therapy for accepting and respecting others as they are without judgment or evaluation.

Faulty Reasoning

Erroneous or flawed processes of thinking that lead to incorrect conclusions or beliefs.

Cognitive Therapy

A form of psychotherapy that aims to change negative patterns of thinking to improve an individual's mood and behaviors.

Reasoning

The cognitive process of looking for reasons, forming conclusions, judgments, or inferences from facts or premises.