Hamad Atomic Spectra 24/06/2021 A. of unknown nature B. high energy electrons C. high energy photons D. radio isotopes Related Mcqs: In hydrogen spectrum which one of the following series lies in the ultraviolet region ?A. Balmer series B. Pfund series C. Bracket series D. Lymann series... Excited atoms return to their ground state in_______________?A. 10-10s B. 10-8s C. 10-6s D. 10-9s... Radiation with wavelength longer than red lights______________?A. ultraviolet rays B. X-rays C. infra red radiation D. visible radiation... In laser production the state in which more atoms are in the upper state than in the lower one is called_____________?A. Metal stable state B. Normal state C. Inverted population D. All the above... The metastable state for an atom in laser light is_____________?A. 10-4 sec B. 10-5 sec C. 10-3 sec D. 10-8 sec...
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