Home
Class 12
PHYSICS
The work function for electron emission ...

The work function for electron emission from a metal is 1.9 eV, and the wavelength of the radiation incident on its surface is 4041 `Å`. Find out the kinetic energy of the fastest photoelectrons.

Text Solution

Verified by Experts

The correct Answer is:
`1.174 eV`
Promotional Banner

Topper's Solved these Questions

  • QUANTUM THEORY

    CHHAYA PUBLICATION|Exercise Exercise (Problem Set- II)|15 Videos

  • QUANTUM THEORY

    CHHAYA PUBLICATION|Exercise Exercise (Hots Numerical Problems)|4 Videos

  • QUANTUM THEORY

    CHHAYA PUBLICATION|Exercise Exercise (Short Answer Type Questions- II)|4 Videos

  • OPTICAL INSTRUMENTS

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|8 Videos

  • QUESTION PAPER OF NEET 2017

    CHHAYA PUBLICATION|Exercise QUESTION PAPERS OF (NEET) (2017)|39 Videos

Similar Questions

Explore conceptually related problems

The photoelectric threshold wavelength of radiation incident on its surface is 3415 Å . If the wavelength of radiation incident on its surface 2020 Å , find out the (i) work function and (ii) kinetic energy of the fastest photoelectrons.

The work function for cesium atom is 1.9 eV. Calculate the threshold wavelength.

Work function for a metal is 1.77 eV and the wavelength of an incident ray on that metal is 5893 Å . Determine the maximum kinetic energy of the photoelectrons emitted from that metal.

Threshold wavelength for photoelectric emission from a metal surface is 3800Å , Utraviolet light of wave-length 2600Å is incident on the metal surface. maximum kinetic energy of emitted photoelectron. (h = 6.63 xx 10^(-27) " erg.s")

thresold Wavelength of incident light on a metal surface is 404 Å . Determine the work function.

If the intensity of incident radiation on a metal surface is doubled, what happens to the kinetic energy of the electrons emitted?

The work function of a metal surface is 2.0 eV. Light of wavelength 5000 Å is incident on it:

Threshold wavelength for photoelectric emission from a metal surface is 3800Å , Utraviolet light of wave-length 2600Å is incident on the metal surface. Find the work function of the metal and

work function for electronic emission from sodium is 1.77 eV. What is the threshold frequency of incident radiation for photon-emission from sodium?

For a monochromatic radiation incident on a metal surface, the stopping potential is 2.0V. Find out the maximum velocity of the emitted photoelectrons.

CHHAYA PUBLICATION-QUANTUM THEORY-Exercise (Problem Set- I)
  1. When radiation of wavelength lamda is incidenton a metallic surface, t...

    Text Solution

    |

  2. work function for electronic emission from sodium is 1.77 eV. What is ...

    Text Solution

    |

  3. The work function for electron emission from a metal is 1.9 eV, and t...

    Text Solution

    |

  4. The photoelectric threshold wavelength of radiation incident on its su...

    Text Solution

    |

  5. The photoelectric work function of a metal is 1.2 eV. What will be the...

    Text Solution

    |

  6. The photoelectric work function of a metal is 3800 Å. If an ultraviole...

    Text Solution

    |

  7. Find out the photoelectric threshold wavelength of copper. Given work ...

    Text Solution

    |

  8. Find the photoelectric threshold frequency of a metal is 6525 Å. What ...

    Text Solution

    |

  9. A monochromatic source, emitting light of wavelength, 600 nm, has a po...

    Text Solution

    |

  10. The threshold frequency of a metal is f(0). When the light of frequenc...

    Text Solution

    |

  11. By how much would the stopping potential for given photosensitive surf...

    Text Solution

    |

  12. Calculate the threshold frequency of photon for photoelectric emission...

    Text Solution

    |

  13. Calculate the kinetic energy of photoelectrons in eV emitted on shinin...

    Text Solution

    |

  14. Calculate the maximum kinetic energy of electrons emitted from a phot...

    Text Solution

    |

  15. The de Broglie wavelength associated with a moving particle changes fr...

    Text Solution

    |

  16. Determine the de Broglie wavelength of an electron moving with velocit...

    Text Solution

    |

  17. For a moving electron, the de Broglie wavelength is 1 Å. What will be ...

    Text Solution

    |

  18. If an electron is send through a potential difference of 60V, what wil...

    Text Solution

    |

  19. The de Broglie wavelength of a moving electron is 1 Å. What is its vel...

    Text Solution

    |

  20. A neutron of mass 1.66xx10^(-27) kg has a kinetic energy of 0.04eV. Wh...

    Text Solution

    |