The radiations emitted form hydrogen filled discharge tube show____________?

Related Mcqs:

Hydrogen atom does not emit X-rays because _________________?

A. its energy levels are too close to each other B. its energy levels are too far apart C. it is too small in size D. it has a single electron...

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...

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

A. radiate electromagnetic energy with a continuous distribution of wavelength B. absorb particular wavelengths when white light is incident on them C. radiate electromagnetic energy of discrete characteristic wavelength D. emit either invisible or visible light...

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...