Question
An atomic system consisting of two energy levels, with population of higher energy level less than that of the lower level, is in thermal equilibrium. Show that the absorption of radiation dominates stimulated emission if radiation of appropriate frequency is introduced into the system. Comment on the consequences of this fact for laser action.
Answer :
Word Count : 377
In an atomic system with two energy levels, let the lower energy level be (E_1) and the higher energy level be (E_2), with populations (N_1) and (N_2) respectively. In thermal equilibrium, according to Boltzmann statistics, the population of the higher energy level is always less than that of the lower energy level: [ \frac{N_2}{N_1} = e^{-(E_2 - E_1)/kT} < 1 ] where (k) is Boltzmann’s constant and (T) is the absolute temperature. This inequality implies ___ ______ ________ __________ ________ ___.
_______ _____ _______ ____ ________ ______ ____ ___ _______ ______ __________ _______.
______ ___ _______ ______ _________ ___ ___ __________ _______.
_________ ____ __________ ______ _________ ___.
_________ _______ __________ ________ ______ __________ ____.
_____ _______ __________ ____ _____ __________ ___.
_________ _____ _____ ________ ________ _______.
__________ _____ _____ ________ ____ ____.
___ ____ __________ __________ _____ _________ __________ _____ ________.
_______ ___ ___ ________ __________ ____ ________ __________ __________ ___ ______ _____.
________ __________ ___ ___ ____.
_______ ________ _________ __________ _________.
_______ _________ _____ _____ ______ __________ _______ ______ _____.
_______ ___ _______ ____ _________ _________ ___ ___ ______ _________ ___.
______ ______ _________ _______ ____ _______ ___ _______ ____ _______.
__________ _____ ____ _________ _________ ____.
_________ ______ ___ ______ _______ ___ _____ ____.
________ _____ ________ _______ __________ __________ __________ __________ _________ __________.
______ _________ ____ __________ _____.
____ _______ __________ ___ ___ ______.
____ _______ _______ __________ _____ ________ _______ _________ __________ _________.
_______ ___ ___ _____ ______ ___ ________ __________ ___.
________ _____ __________ ________ _________ ____ ____.
___ ___ __________ ___ _______ ______ _________ _________ ____.
______ _____ _____ ___ __________ _________ ______ _____.
________ ______ _____ _________ ________ ____ _____ ________ ___.
______ _____ _______ ________ ______ _______ _________ ____ __________ _________.
_________ ___ ______ _____ ____.
__________ ______ _______ _______ __________ _________.
________ ____ _______ _________ __________ _______ ____ ______ ___ _________.
________ _______ ___ ____ ______ __________ _________ ________ ______ ___ _______.
__________ _________ ______ ________ __________ ___ ___.
__________ ______ _______ ______ _________ ________ _______ ________ ___.
____ __________ _______ ______ ____.
_________ ___ ______ ____ ________ _______ ______ _______ _____ _________ ____.
__________ _______ _____ _____ _______ ________ _______ ____ _____.
________ ______ __________ ___ __________ _________ __________ ______ ____.
_____ _________ ________.
Get Full Answer on WhatsApp
In an atomic system with two energy levels, let the lower energy level be (E_1) and the higher energy level be (E_2), with populations (N_1) and (N_2) respectively. In thermal equilibrium, according to Boltzmann statistics, the population of the higher energy level is always less than that of the lower energy level: [ \frac{N_2}{N_1} = e^{-(E_2 - E_1)/kT} < 1 ] where (k) is Boltzmann’s constant and (T) is the absolute temperature. This inequality implies ___ ______ ________ __________ ________ ___.
_______ _____ _______ ____ ________ ______ ____ ___ _______ ______ __________ _______.
______ ___ _______ ______ _________ ___ ___ __________ _______.
_________ ____ __________ ______ _________ ___.
_________ _______ __________ ________ ______ __________ ____.
_____ _______ __________ ____ _____ __________ ___.
_________ _____ _____ ________ ________ _______.
__________ _____ _____ ________ ____ ____.
___ ____ __________ __________ _____ _________ __________ _____ ________.
_______ ___ ___ ________ __________ ____ ________ __________ __________ ___ ______ _____.
________ __________ ___ ___ ____.
_______ ________ _________ __________ _________.
_______ _________ _____ _____ ______ __________ _______ ______ _____.
_______ ___ _______ ____ _________ _________ ___ ___ ______ _________ ___.
______ ______ _________ _______ ____ _______ ___ _______ ____ _______.
__________ _____ ____ _________ _________ ____.
_________ ______ ___ ______ _______ ___ _____ ____.
________ _____ ________ _______ __________ __________ __________ __________ _________ __________.
______ _________ ____ __________ _____.
____ _______ __________ ___ ___ ______.
____ _______ _______ __________ _____ ________ _______ _________ __________ _________.
_______ ___ ___ _____ ______ ___ ________ __________ ___.
________ _____ __________ ________ _________ ____ ____.
___ ___ __________ ___ _______ ______ _________ _________ ____.
______ _____ _____ ___ __________ _________ ______ _____.
________ ______ _____ _________ ________ ____ _____ ________ ___.
______ _____ _______ ________ ______ _______ _________ ____ __________ _________.
_________ ___ ______ _____ ____.
__________ ______ _______ _______ __________ _________.
________ ____ _______ _________ __________ _______ ____ ______ ___ _________.
________ _______ ___ ____ ______ __________ _________ ________ ______ ___ _______.
__________ _________ ______ ________ __________ ___ ___.
__________ ______ _______ ______ _________ ________ _______ ________ ___.
____ __________ _______ ______ ____.
_________ ___ ______ ____ ________ _______ ______ _______ _____ _________ ____.
__________ _______ _____ _____ _______ ________ _______ ____ _____.
________ ______ __________ ___ __________ _________ __________ ______ ____.
_____ _________ ________.
Get Full Answer on WhatsApp
IGNOU NEWS
Assignment Submission Last Date Extended Till 30 June 2026 Click Here★★★IGNOU June 2026 TEE Date Sheet Released Click Here★★★