Q139. The condition in which an excited energy level (specifically, a metastable state) has a greater population of atoms or electrons than a lower energy level is known as:Physics — NUST Mock By IBAGRADS 2 — Question 139 of 200A. Ionized stateB. Stimulation stateC. Population inversionD. All of thesePractice more Physics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →