Metastable States and Atomic Energy Levels Quiz

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What happens when energy is supplied to atoms?

They become stable

They are excited to higher energy levels (correct)

They become inert

They release excess energy

What is a metastable state?

A state of constant excitation

A state of equilibrium

A longer lived upper level from where an excited atom does not return to a lower level at once (correct)

A state of rapid energy release

Why can't population inversion be established in atoms with short-lived excited states?

Atoms rapidly return to the lower energy state through spontaneous transitions (correct)

Atoms accumulate at the upper energy level

Atoms remain in the excited state indefinitely

Atoms undergo stimulated emission

Why do excited atoms need to 'wait' at the upper energy level to establish population inversion?

To allow a large number of atoms to accumulate at that level Signup and view all the answers

Why do atoms in metastable states not rapidly return to the lower energy level?

They remain excited for an appreciable time Signup and view all the answers

What is the characteristic of atoms in metastable states?

They remain excited for an appreciable time Signup and view all the answers

Why can't population inversion be established in atoms with short-lived excited states?

Atoms rapidly return to the lower energy level through spontaneous emission Signup and view all the answers

What is the key requirement to establish population inversion in atoms?

Excited atoms need to 'wait' at the upper energy level Signup and view all the answers

What is the significance of a metastable state?

Excited atoms do not return to the lower level at once Signup and view all the answers

Why do atoms in metastable states not undergo stimulated emission?

Atoms do not stay long enough at the excited state for stimulated emission Signup and view all the answers

Metastable States and Atomic Energy Levels Quiz

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Questions and Answers

What happens when energy is supplied to atoms?

What is a metastable state?

Why can't population inversion be established in atoms with short-lived excited states?

Why do excited atoms need to 'wait' at the upper energy level to establish population inversion?

Why do atoms in metastable states not rapidly return to the lower energy level?

What is the characteristic of atoms in metastable states?

Why can't population inversion be established in atoms with short-lived excited states?

What is the key requirement to establish population inversion in atoms?

What is the significance of a metastable state?

Why do atoms in metastable states not undergo stimulated emission?

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