Hamad Atomic Spectra 26/12/2021 A. B-rays B. X-rays C. Far infrared D. Infrared Related Mcqs: Ratio of the weight of H-atom to that of an electron is approximately______________?A. 18.336 B. 1836 C. 18360 D. 183.6... In obtaining an X-ray photograph of our hand we use the principle of______________?A. photo electric effect B. ionization C. shadow photograph D. any of above... Quality of X-rays depends upon ____________ A-filament current B-accelerating voltage C-material of the target ?A. A & B B. B & C C. A & C D. A B & C... 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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