12th Class Physics MCQS Atomic Spectra Online Test 5

in-helium-neon-laser-2-c-discharge-tube-is-filled-with-neon-gas-3-a_-_0-15,in-helium-neon-laser-2-c-the-discharge-tube-is-filled-with-3-a_-_85-25-he-2-c-15-25-neon,in-meta-stable-state-electron-stays-for-3-a_-_10-3-csup-3-e-3-3-c-2-fsup-3-es,in-the-meta-stable-the-atoms-can-reside-for-3-a_-_10-3-csup-3-e-3-3-c-2-fsup-3-es,k-3-csub-3-e-e-2-88-9-e-3-c-2-fsub-3-e-x-rays-are-produced-due-to-transition-of-electrons-from-3-a_-_l-to-k-shell,laser-can-be-made-by-creating-3-a_-_alll-of-these,laser-is-a-beam-of-light-which-is-3-a_-_all-of-these,life-time-of-meta-stable-state-is-3-a_-_10-3-csup-3-e-3-3-c-2-fsup-3-es,paschen-series-lies-in-the-3-a_-_infrred-region,photons-emitted-in-inner-shell-transition-are-3-a_-_characteristic-x-rays,production-of-x-rays-is-reverse-process-of-3-a_-_pair-production,radius-of-first-bohr-e-2-80-99-s-orbit-is-3-a_-_0-053-nm