Question

In population inversion condition, the number of atoms in the higher energy state is ............. than in the lower energy state.

• A. lesser
• B. larger
• C. both (a) and (b)
• D. none of these

Answer 1

Answer: (B)

larger

Population inversion, in physics, the redistribution of atomic energy levels that takes place in a system so that laser action can occur. Normally, a system of atoms is in temperature equilibrium and there are always more atoms in low energy states than in higher ones.

In population inversion condition, the number of atoms in the higher energy state is larger than in the lower energy state.

hence , option B is correct .