A Light Ray Incident on the Interface Between Air and Glass

question 39

Multiple Choice

A light ray incident on the interface between air and glass can undergo total internal reflection:

• A) only in the glass.
• B) only in the air.
• C) in either the glass or the air.
• D) in the air only if the index of refraction of the glass is greater than the .

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Definitions:

Oxygen Level

The concentration of oxygen in the blood, essential for maintaining bodily functions and often measured using pulse oximetry.

Sensor

A device that detects or measures a physical property and records, indicates, or otherwise responds to it, often used in various technological and scientific applications.

Sphygmomanometer

A medical device used to measure blood pressure, consisting of an inflatable cuff to restrict blood flow and a manometer to measure the pressure.

Systolic Pressure

The pressure in the arteries when the heart beats and fills them with blood; the higher number in a blood pressure reading.