LASER is an acronym for Light Amplification by ----

A Stimulated Emission of Radio waves
B Stimulated Emission of Radiation
C Spontaneous Emission of Radio waves
D Spontaneous Emission of Radiation

Correct Answer: Stimulated Emission of Radiation

The word laser is an acronym for the expression "light amplification by stimulated emission of radiation." In other words, a laser is a device capable of converting light or electrical energy into a focused, high energy beam.
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