The Ratio of the Speed of Light in a Vacuum

question 86

Multiple Choice

The ratio of the speed of light in a vacuum to the speed of light in a medium is known as the index of

• A) reflection.
• B) refraction.
• C) diffraction.
• D) none of these.

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Definitions:

Immune System

The body's defense mechanism against infections and diseases, consisting of organs, cells, tissues, and proteins that work together to combat harmful pathogens.

Sympathetic Nervous System

A division of the autonomic nervous system that mobilizes the body’s resources in emergency, stressful, and emotional situations.

Laboratory Research

Scientific investigations conducted in controlled environments to study biological, chemical, or physical processes.

Stress

A physical or emotional response to external or internal pressures, often leading to various health issues if prolonged.