he wavelength of emission of radiation is 3000A and the

Last updated: 6/10/2023

he wavelength of emission of radiation is 3000A and the coefficient of spontaneous mission is 10 power12 s Given k 8 6x 10 5eV K or 1 38 X 10 power 23 J K Einstein coefficient A21 stands for OPTIONS reciprocal of life time of excited state life time of excited state reciprocal of life time of ground state