When we excite some atoms by heat collision or electrical discharge they will________________?

Related Mcqs:

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...

The radiations emitted form hydrogen filled discharge tube show____________?

A. band spectrum B. line spectrum C. continuous spectrum D. absorption spectrum...

Maximum frequency in the spectrum from X-ray tube is directly proportional to the______________?

A. Number of incident electron i.e. filament current B. The kinetic energy of the incident electron i.e. the potential difference through which they are accelerated C. The soft target which can easily emit electrons D. All of above are correct...

X-rays are diffracted by a crystal but not by a diffraction grating because_____________?

A. The ions in a crystal are well arranged B. The lines in a diffraction grating cannot reflect X-rays. C. The penetration power of X-rays is high in a diffraction grating D. The wavelengths of X-rays are of the same order of magnitude as the separation between atoms in a crystal...

Electron cannot exist in the nucleus it is confirmed by observing that______________?

A. It does emit radiation B. Its size as compare to proton and neutron is very small C. No antiparticle of electron is present D. The velocity of electron must be very high according to uncertainty principle...