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In a laboratory experiment on emission f...

In a laboratory experiment on emission from atomic hydrogen in a discharge tube only a small number of lines are observed whereas a large number of lines are present in the hydrogen spectrum of a star .This is because in a laboratory

A

the amount of hydrogen taken is much smaller than that present in star

B

the temperature of hydrogen is much smaller than that of the star

C

the pressure of hydrogen is much smaller than that of the star

D

the gravitational pull is much smaller than that in the star

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The correct Answer is:
B
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CP SINGH-BOHR THEORY-Exercises
  1. The electron in the hydrogen atom jumps from excited state (n=3) to it...

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  2. Three photons coming from excited atoms hydrogen sample are picked up ...

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  3. In a laboratory experiment on emission from atomic hydrogen in a disch...

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  4. The de-Broglie wavelength of an electron in the first Bohr orbit is

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  5. Consider an eelctron in the nth orbit of a hydrogen atom in the Bohr m...

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  6. The ratio of the longest and shortest wavelengths of the Lyman series ...

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  7. The ratio of longest wavelength and the shortest wavelength observed i...

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  8. In terms of Rydberg's constant R, the wave number of the first Balman ...

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  9. The wavelength of the first line of the Balmer series of hydrogen atom...

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  10. The wavelength of the first line of Lyman series for hydrogen atom is ...

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  11. Every series of hydrogen spectrum has an upper and lower limit in wave...

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  12. Let v(1) be the frequency of series limit of Lyman series, v(2) the fr...

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  13. The transtion from the state n = 4 to n = 3 in a hydrogen like atom r...

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  14. Whenever a hydrogen atom emits a photon in the Balmer series, it may...

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  15. A beam of ultraviolet light of all wavelength passes through hydrogen ...

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  16. When a hydrogen atom emits a photon in going from n=5 to n=1, its reco...

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  17. The radius of the hydrogen atom in its ground state is 5.3xx10^(-11) m...

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  18. A photon of energy 10.2 eV corresponds to light of wavelength lamda(0...

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  19. An electron with kinetic energy =E eV collides with a hydrogen atom in...

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  20. An electron with kinetic energy 5eV is incident on a hydrogen atom in ...

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