12th Class Physics MCQS Atomic Spectra Online Test 7

the-radius-of-10th-orbit-in-hydrogen-atom-is-3-a_-_5-3-nm,the-radius-of-first-shell-of-hydrogen-atom-was-quantized-which-is-3-a_-_0-053-nm,the-relation-for-paschen-series-is-given-as-3-a_-_3-f-3-f-1-2-f-3-f-3-dr-3-csub-3-eh-3-c-2-fsub-3-e-281-2-f-3-3-csup-3-e-2-3-c-2-fsup-3-e-3-f-1-2-fn-3-csup-3-e-2-3-c-2-fsup-3-e-29,the-rest-mass-of-x-ray-photon-is-3-a_-_zero,the-shortest-wave-length-in-bracket-series-has-wave-length-3-a_-_16-2-fr-3-csub-3-eh-3-c-2-fsub-3-e,the-speed-of-an-electron-in-nth-orbit-is-given-as-3-a_-_2-3-f-ke-3-csup-3-e-2-3-c-2-fsup-3-e-2-fnh,the-unit-of-rh-28-rydberg-e-2-80-99-s-constant-29-is-3-a_-_m-3-csup-3-e-1-3-c-2-fsup-3-e,the-unit-of-rydberg-e-2-80-99-s-constant-is-3-a_-_m-3-csup-3-e-1-3-c-2-fsup-3-e,the-velocity-of-electron-in-1st-orbit-of-h-atom-is-3-a_-_2-19-c-3-9710-3-csup-3-e-6-3-c-2-fsup-3-em-2-fsec,we-can-find-from-de-broglie-formula-3-a_-_wavelength,when-a-meta-l-is-heated-sufficiently-electrons-are-given-off-by-the-metal-theis-phenomenon-is-knowon-as-3-a_-_thermionic-emission,which-is-not-characteristic-of-laser-3-a_-_multi-direction