Home
Class 12
PHYSICS
The value of wavelength radiation emitte...

The value of wavelength radiation emitted by an `H`-atom, if atom is excited to state with principal quantum number four is :

A

`(5R)/(36)`

B

`(16)/(15R)`

C

`(36)/(5R`

D

`(3R)/(16)`

Text Solution

Verified by Experts

The correct Answer is:
B
`1/lambda=RZ^(2)(1/n^(2_(2))1/n_(2)^(2))`
Promotional Banner

Topper's Solved these Questions

  • ATOMIC PHYSICS

    NARAYNA|Exercise LEVEL-II (H.W)|14 Videos

  • ATOMIC PHYSICS

    NARAYNA|Exercise LEVEL-VI|55 Videos

  • ALTERNATING CURRENT

    NARAYNA|Exercise LEVEL - II(H.W)|13 Videos

  • ATOMS

    NARAYNA|Exercise EXERCISE -4|47 Videos

Similar Questions

Explore conceptually related problems

the maximum number of photons emitted by an H -atom , if atom is excited to state with principal quantum number four is

Find the maximum number of photons number of photons emitted by an H-atom, if atom is excited to atates with principal quantum number four.

How many different wavelength may be observed in the spectrum from a hydrogen sample if the atoms excited to states with principal quantum number n?

Electron of energies 10.20 eV and 12.09 eV can cause radiation to be emitted from hydrogen atoms . Calculate in each case, the principal quantum number of the orbit to which electron in the hydrogen atom is raised and the wavelength of the radiation emitted if it drops back to the ground state.

X different wavelengths may be observed in the spectrum from a hydrogen sample if the atoms are exited to states with principal quantum number n=6 ? The value of X is ______________.

How many different wavelengths, may be observed in the spectrum from a hydrogen sample if the atom are excited to be state withprincipal quantum number n ?

Hydrogen atom is excieted from ground state to another state with principal quantum number equal to 4

The energy of an excited hydrogen atom is -3.4eV. The principal quantum number of the orbit is

Photons of equal energy were incident on two different gas samples. One sample containing H-atoms in the ground state and the other sample containing H-atoms in some excited state with a principle quantum number 'n'. The photonic beams totally ionise the H-atoms. If the difference in the kinetic energy of the ejected electrons in the two different cases is 12.75 eV . Then find the principal quantum number 'n' of the excited state.

If the wavelength of K_(alpha) radiation emitted an atom of atomic number Z = 41 is lambda , then the atomic number for an atom that emits K_(alpha) radiation with the wavelength 4lambda , is

NARAYNA-ATOMIC PHYSICS-LEVEL-I (H.W)
  1. Two electrons Beams having velocities in the ratio1:2 are subjected to...

    Text Solution

    |

  2. The Velocity of electrons accelerated bt potential difference of 1xx10...

    Text Solution

    |

  3. Cathode ray tube is operating at5KV. . Then the K.E. acquire by the el...

    Text Solution

    |

  4. A steam of similar negatively charged particles enters an electrical f...

    Text Solution

    |

  5. An oil drop having a mass 4.8xx10^(-10)g. and charge 2.4xx10^(-18)C st...

    Text Solution

    |

  6. In Millikan oil drop experiment, a charged drop of mass 1.8 xx 10^(-14...

    Text Solution

    |

  7. An alpha-particle accelerated through V volt is fired towards a nucleu...

    Text Solution

    |

  8. In Rutherford scattering experiment, what will b ethe correct angle fo...

    Text Solution

    |

  9. The impact parameter at which the scattering angle is 90^(0) , z=79 an...

    Text Solution

    |

  10. If a hydrogen atom emit a photon of energy 12.1 eV , its orbital angul...

    Text Solution

    |

  11. In an excited state of hydrogen like atom an electron has total energy...

    Text Solution

    |

  12. What is the ionisation potential of hydrogen atom?

    Text Solution

    |

  13. The energy of electron in an excited hydrogen atom is -3.4eV. Its angu...

    Text Solution

    |

  14. The velocity of an electron in the second orbit of sodium atom (atomic...

    Text Solution

    |

  15. In any Bohr orbit of the hydrogen atom, the ratio of kinetic energy to...

    Text Solution

    |

  16. Let the potential energy of the hydrogen atom in the ground state be z...

    Text Solution

    |

  17. The value of wavelength radiation emitted by an H-atom, if atom is exc...

    Text Solution

    |

  18. the maximum number of photons emitted by an H-atom , if atom is excite...

    Text Solution

    |

  19. Energy levels A, B, C of a certain atom corresponding to increasing va...

    Text Solution

    |

  20. It is found experimentally that 13.6 eV energy is required to separate...

    Text Solution

    |