Question

14) Populosion inversion is non-equilibrium conditio
in which .​

Answer 1

Population inversion is a state of a system, for example a laser gain medium, where a higher-lying energy level is more strongly populated than a lower-lying level. ... This cannot occur under conditions of thermal equilibrium, where the level populations are described by a Boltzmann distribution.

Answer 2

Explanation:

Population inversion is a state of a system, for example a laser gain medium, where a higher-lying energy level is more strongly populated than a lower-lying level. ... This cannot occur under conditions of thermal equilibrium, where the level populations are described by a Boltzmann distribution.