Home
Class 12
PHYSICS
Any radiation in the ultra violet region...

Any radiation in the ultra violet region of Hydrogen spectrum is able to eject photo-electrons from a metal. Then the maximum value of threshold wave length is `lambda= (1)/(R) = 911 Å` then the frequency of the metal is, nearly

A

`3.3xx10^(15)` HZ

B

`2.5xx10^(15)` HZ

C

`4.6xx10^(14)` HZ

D

`8.2xx10^(14)` HZ

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ATOMS

    AAKASH SERIES|Exercise PRACTICE EXERCISE|21 Videos

  • ATOMS

    AAKASH SERIES|Exercise EXERCISE - I|21 Videos

  • APPENDICES (REVISION EXERCISE)

    AAKASH SERIES|Exercise LAW OF MOTION|91 Videos

  • CAPACITORS

    AAKASH SERIES|Exercise PRACTICE SHEET (ADVANCED) (Integer Type Questions)|2 Videos

Similar Questions

Explore conceptually related problems

The photo electric work function of a metal is 1 eV. Light of wave length lamda=3000A^(@) falls on it. The velocity of emitted photo electron is approximately

A radiation of wave length 3000 Å is required to remove an electron from a metal atom. If a radiation of wave length 2000Å is allowed to incident on the metal surface, the kinetic energy of the emitted electron in k/J mole is

Electrons are emitted with zero velocity from a metal surface when it is exposed to radiation of wavelength 4000Å . What is the threshold frequency (upsilon_(0)) ?

Electrons are emitted with zero velocity from a metal surface when it is exposed to radiation of wavelength 6800 Å. Calculate threshold frequency (V_(0)) and work function (W_(0)) of metal.

The K.E. of photo electron ejected from a metal surface by light of wave length 2000A^(@) range from zero to 3.2xx10^(-19)J . The stopping potential will be equal to

When a metal surface is exposed to certain frequency of electromagnetic radiation. The kinetic energy of electron ejected from metal surface is 0.20 eV. If its work function (W_(0)) is 4.80 eV, the approximate frequency of radiation falling on the metal surface in Hz is

AAKASH SERIES-ATOMS-EXERCISE - II
  1. When the electron in hydrogen atom jumps from the second orbit to the...

    Text Solution

    |

  2. The ratio of the largest to shortest wavelengths in Balmer series of h...

    Text Solution

    |

  3. An electron in a hydrogen atom makes a transition n(l) rarr n(2), wher...

    Text Solution

    |

  4. Any radiation in the ultra violet region of Hydrogen spectrum is able ...

    Text Solution

    |

  5. A hydrogen atom emits a photon corresponding to an electron transtion ...

    Text Solution

    |

  6. The wave number of energy emitted when electron jumbs from fourth orbi...

    Text Solution

    |

  7. In a Bohr atom the electron is replaced by a particle of mass 150 time...

    Text Solution

    |

  8. If the wavelength of first member of Balmer series of hydrogen spectru...

    Text Solution

    |

  9. A hydrogen-like atom (atomic number Z) is in a higher excited state of...

    Text Solution

    |

  10. Electrons from n = 2 to n= 1 in hydrogen atom is made to fall on a met...

    Text Solution

    |

  11. Let vartheta(1) be the frequency of the series limit of the Lyman seri...

    Text Solution

    |

  12. When a silver foil (Z = 47) was used in an alpha ray scattering exper...

    Text Solution

    |

  13. In Rutherford experiments on alpha-ray scattering the number of partic...

    Text Solution

    |

  14. An alpha nucleus of energy 1/2 m vartheta^(2) bombards a heavy nuclear...

    Text Solution

    |

  15. In Rutherford's alpha particle scattering experiment with their gold f...

    Text Solution

    |

  16. An alpha-particle of energy 5 Mev is scattered through 180^(@) by a fi...

    Text Solution

    |

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

    Text Solution

    |

  18. Energy required for the electron excitation in Li++ from the first to ...

    Text Solution

    |

  19. Hydrogen (""(1)H^(1)), Deuterium (""(1)H^(2)), singly ionized Helium (...

    Text Solution

    |