Total number of series in hydrogen spectrum is_____________?

Related Mcqs:

X-ray are________________?

A. of unknown nature B. high energy electrons C. high energy photons D. radio isotopes...

Tick the correct statement ?

A. an atom has limited number of ionization potentials but a large number of excitation potentials B. there are as many excitation potentials as there are excited states C. the difference between the energy of the ground sate and any one of the excited states is the measure of excitation energy D. all of above...

X-rays are similar in nature to_______________?

A. Cathode rays B. Positive rays C. γ-rays D. Beta rays...

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...