What Is the Primary Difference Between Lasers and Light-Emitting Diodes

question 20

Multiple Choice

What is the primary difference between lasers and light-emitting diodes (LEDs) ?

• A) Laser light is monochromatic and LED light is polychromatic.
• B) Light emitted by LEDs has limited coherence and directionality.
• C) Laser light can produce heat in biological tissues and LEDs cannot produce heat.
• D) LED light is produced by radio waves emitted by supra-luminous diodes.

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Definitions:

Alkane Name

A nomenclature system for alkanes based on the number of carbon atoms, using prefixes to indicate chain length.

Alkane Name

A systematic nomenclature for naming organic compounds where the molecules consist only of carbon and hydrogen atoms, arranged in a tree structure with single bonds.

Alkane Name

The systematic naming of alkanes follows the IUPAC nomenclature, typically ending in "-ane" and beginning with a prefix indicating the number of carbon atoms.

IUPAC Name

The systematic naming of chemical compounds as per the rules established by the International Union of Pure and Applied Chemistry.