Which of the Following Is Essential for Laser Action to Occur

question 3

Multiple Choice

Which of the following is essential for laser action to occur between two energy levels of an atom?

• A)the lower level is metastable
• B)the upper level is metastable
• C)the lower level is the ground state
• D)the are more atoms in the lower level than in the upper level
• E)the lasing material is a gas

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Definitions:

Stressful Events

Occurrences that cause significant anxiety, pressure, or strain, requiring adaptation or coping mechanisms.

Constructive Coping

Strategies and techniques that individuals use to deal effectively with stressors, challenges, or problems, fostering positive outcomes.

Differing Attitudes

Variations in personal views, beliefs, or feelings towards objects, people, or concepts, which can influence an individual's behavior and perception.

Objective

Based on fact, measurable and observable, devoid of personal feelings or biases.