The Speed of Light in a Material Is 0

question 27

Multiple Choice

The speed of light in a material is 0.50c. What is the critical angle of a light ray at the interface between the material and a vacuum?

• A) 30°
• B) 21°
• C) 24°
• D) 27°

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Definitions:

Absolute Threshold

The minimum intensity of a stimulus that is required to be consciously detected 50% of the time by a sensory system, essentially the lowest level of detectable sensation.

Unconscious

The part of the mind that contains thoughts, feelings, desires, and memories that are not within our conscious awareness, but influence our behavior.

Background Music

Music played in a space primarily to enhance its atmosphere and not intended to be the focus of active listening.

Repetitiously

Performing the same action or thinking the same thoughts repeatedly, often without variation.