Home
Class 12
PHYSICS
An electrons of a stationary hydrogen at...

An electrons of a stationary hydrogen aton passes form the fifth enegry level to the ground level. The velocity that the atom acquired as a result of photon emission will be
`(m` is the mass of the electron, `R`, Rydberg constanrt and `h`, Planck's constant)

A

`(24hR)/(25m)`

B

`(25hR)/(24m)`

C

`(25m)/(24hR)`

D

`(24m)/(25hR)`

Text Solution

Verified by Experts

The correct Answer is:
A
Hence, `E_(5)-E_(1)=(hc)/(lambda)`
and `(Rhc)/(25)-Rhc=(hc)/(lambda)rArr(24)/(25)R=(1)/(lambda)`
But `p=(hc)/(lambda)anv=(h)/(mlambda)=(24)/(25)(Rhc)/(m)`
Promotional Banner

Topper's Solved these Questions

  • ATOMS

    DC PANDEY|Exercise MATCH THE COLUMNS|4 Videos

  • ALTERNATING CURRENT

    DC PANDEY|Exercise JEE MAIN|63 Videos

  • CAPACITORS

    DC PANDEY|Exercise OBJECTIVE_TYPE|1 Videos

Similar Questions

Explore conceptually related problems

An electron of stationary hydrogen atom passes from the fifth energy level to the ground level.The velocity that the atom acquired a result of photon emission will be: "m" is the mass of the atom,"R" is Rydberg constant and "h" is Planck's constant)

An electron of stationary hydrogen atom jumps from 4th energy level to ground level. The velocity that the photon acquired as a result of electron transition will be (where, h= Planck's constant, R=Rydberg's constant m = mass of photon)

The electron in hydrogen atom passes form the n=4 energy level to the n=1 level. What is the maximum number of photons that can be emitted? and minimum number?

An electron in a hydrogen atom jumps from n = 5 energy level to n = 1 energy level. What are the maximum number of photons that can be emitted ?

An electron in excited hydrogen atom falls from fifth energy level to second energy level. In which of the following regions, the spectral line will be observed and is part of which series of the atomic spectrum?

An electron in hydrogen atom is in the n=4 energy level. When it makes a transition to some lower energy level, to which series the wavelength of emitted photon belong?

Which one of the following will result in an electron transition from the n = 4 level to the n= 7 level in a hydrogen atom?

DC PANDEY-ATOMS-MEDICAL ENTRANCES GALLERY
  1. The K(alpha) X-rays of moylydenum has a wavelength of 71xx10^(-12)m. I...

    Text Solution

    |

  2. Pick out the correct statement from the following

    Text Solution

    |

  3. Ligth emitted during the de excitation of electrons from n=3 to n=2, ...

    Text Solution

    |

  4. The energy required in ionise a helium atom is equal to 24.6 eV The ...

    Text Solution

    |

  5. The figure shows the energy level of certain atom. When the electron d...

    Text Solution

    |

  6. Spectrum of X-rays is

    Text Solution

    |

  7. The spectral series of the hydrogen spectrum that lies in the ultravio...

    Text Solution

    |

  8. The following diagram indicates the energy levels of a certain atom wh...

    Text Solution

    |

  9. As par Bohr model, the minimum energy (in eV) required to remove an el...

    Text Solution

    |

  10. If the series limit of Lyman series for Hydrogen atom is equal to the ...

    Text Solution

    |

  11. Electron in hydrogen atom first jumps from third excited state to seco...

    Text Solution

    |

  12. An electrons of a stationary hydrogen aton passes form the fifth enegr...

    Text Solution

    |

  13. Assertion Bamer series lies in the visble region of electromagnetic s...

    Text Solution

    |

  14. Assertion A beam of charged particles is employed in the treatment of ...

    Text Solution

    |

  15. In Bohr model of hydrogen atom, the force on the electron depends on t...

    Text Solution

    |

  16. The wavelength of K(a) line copper is 1.5Å. The ionisation energy of K...

    Text Solution

    |

  17. The wavelength of first line of Balmer series is 6563Å. The wavelength...

    Text Solution

    |

  18. The electron of a hydrogen atom revolves the proton in a circuit nth o...

    Text Solution

    |

  19. If 10000 V is applied across an X-ray tube, what will be the ratio of ...

    Text Solution

    |

  20. Consider a hydrogen-like atom whose energy in nth excited state is giv...

    Text Solution

    |