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Ratio of time period of electron in firs...

Ratio of time period of electron in first and second orbit of H-atom would be -

A

`1:18`

B

`1:8`

C

`1:2`

D

`2:1`

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The correct Answer is:
B
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MOTION-ATOMIC STRUCTURE -EXERCISE-2 (LEVEL-I)
  1. Radius of Bohr's orbit of hydrogen atom is

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  2. One the basis of Bohr's model, the radius of the 3rd orbit is :

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  3. Ratio of time period of electron in first and second orbit of H-atom w...

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  4. In the Bohr’s model, for unielectronic species following symbols are u...

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  5. The energy of electron is maximum at

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  6. Third line in Balmer series corresponds t o an electron transition bet...

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  7. The shortest wavelength of He^(+) in Balmer series is x. Then longest ...

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  8. An electron in a hydrogen atom in its ground state absorbs energy equa...

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  9. The ratio of difference in wavelengths of 1^(st) and 2^(nd) lines of L...

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  10. The ratio of wavelength of photon corresponding to the alpha-line of L...

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  11. Three energy levels P,Q,R of a certain atom are such that E(P)ltE(Q)lt...

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  12. The value of (n(2)+n(1)) and (n(2)^(2)-n(1)^(2)) for He^(+) ion in at...

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  13. Number of possible sepectral lines which ,may br emitted in bracket s...

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  14. The longest wavelength of He^(+) in paschen series is "m", then shor...

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  15. An electron, a proton and an alpha particle have kinetic energy of 16...

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  16. The approximate wavelength associated with a gold-ball weighting 200 g...

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  17. What is uncertainity in location of a photon of wavelength 5000 Å if w...

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  18. Assuming Heisenberg Uncertainity Principle to be true what could be th...

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  19. An electron is moving with the velocity equal to 10% of the velocity o...

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  20. The following graph between Psi^(2) probability density and distance f...

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