Home
Class 12
PHYSICS
The photoelectric threshold wavelength o...

The photoelectric threshold wavelength of a metal is 230 nm. Determine the maximum kinetic energy in joule and eV of the ejected electron from metal surface when it is exposed to a radiation of wavelength 180 nm. (Planck's constant h = `6.63 xx 10^-34 J-S, C = 3 xx 10^8 m//sec`.)

Promotional Banner

Topper's Solved these Questions

  • Dual Nature of Radiation and Matter

    CHETANA PUBLICATION|Exercise EXERCISE|89 Videos
  • Current Electricity

    CHETANA PUBLICATION|Exercise Exercise|92 Videos
  • Electromagnetic Induction

    CHETANA PUBLICATION|Exercise EXERCISE|109 Videos

Similar Questions

Explore conceptually related problems

The threshold wavelength of tungsten is 2.76 xx 10^-5 cm .What will be the maximum kinetic energy of electrons ejected in each of the following cases: if ultraviolet radiation of wavelength lambda = 1.80 xx 10^-5 cm .

If a light of wavelength 5000overset@ A is incident on a metal surface of work function 6 eV, emission of photoelectrons is possible or not? [h = 6.63 xx 10^-34 J-S, C = 3 xx 10^8 m//sec] .

The maximum wavelength of radiation that can produce photoelectric effect in a certain metal is 200 nm . The maximum kinetic energy acquired by electron due to radiation of wavelength 100 nm will be

The photoelectric threshold wavelength of silver is 3250 xx 10^(-10) m . The velocity of the electron ejected from a silver surface by ultraviolet light of wavelength 2536 xx 10^(-10) m is (Given h = 4.14 xx 10^(6) ms^(-1) eVs and c = 3 xx 10^(8) ms^(-1))

The threshold wavelength for silver is 3800overset@ A . Calculate maximum kinetic energy in eV of photoelectrons emitted when ultraviolet light of wavelength 2600overset@ A falls on it. Also calculate stopping potential ( 1 eV = 1.6 xx 10^-19 J , Planck's constant = h = 6.63 xx 10^-34 Js , speed of light in vacuum = 3 xx 10^8 m//s ).

Find the energy of the electron in eV in the third Bohr orbit of the hydrogen atom. ( Rydberg's constant R = 1.097 xx10^7 m^-1 Planck's constant (h) = 6.63xx10^-34 J.S , velocity of light in air (c) = 3xx 10^8 m//s)

The threshold wavelength of tungsten is 2.76 xx 10^-5 cm .What will be the maximum kinetic energy of electrons ejected in each of the following cases: radiation of frequency 4 xx 10^15 Hz is made incident on the tungsten surface.

The threshold wavelength of tungsten is 2.76 xx 10^-5 cm .What will be the maximum kinetic energy of electrons ejected if radiation of frequency 4 xx 10^15 Hz is made incident on the tungsten surface .

CHETANA PUBLICATION-Dual Nature of Radiation and Matter-EXERCISE
  1. The photoelectric threshold wavelength of a metal is 230 nm. Determine...

    Text Solution

    |

  2. Determine frequency and wavelength of a photon having energy 1.3eW.

    Text Solution

    |

  3. Calculate the energy associated with a photon of wavelength 4000 overs...

    Text Solution

    |

  4. Aluminium metal has a threshold frequency corresponding to wavelength ...

    Text Solution

    |

  5. The threshold wavelength for silver is 3800overset@ A.Calculate the ph...

    Text Solution

    |

  6. Photoelectric work function for silver is 3.315 eV. Calculate the thre...

    Text Solution

    |

  7. The photoelectric work function for a metal surface is 2.4eV.If a ligh...

    Text Solution

    |

  8. The wavelength corresponding to the threshold frequency for a certain ...

    Text Solution

    |

  9. The photoelectric work function of the emitter of photoelectric cell i...

    Text Solution

    |

  10. The threshold frequency for a certain method is 3.3 xx 10^14 Hz. If li...

    Text Solution

    |

  11. The longest wavelength that can eject photo electrons from pt is 1950o...

    Text Solution

    |

  12. What is the wave number of a beam of light in air if its frequency is ...

    Text Solution

    |

  13. Energy of a photon is 2 eV. Find its frequency and wavelength.

    Text Solution

    |

  14. Calculate the momentum and Energy of a photon of wavelength 4000overse...

    Text Solution

    |

  15. The energy of a photon is10 xx 10^-19J.Calculate its wavelength.

    Text Solution

    |

  16. The work function of silver is 5.26 xx 10^-19J. Calculate its threshol...

    Text Solution

    |

  17. The work function of a metal is 1.6 xx 10^-19J. The metal surface is i...

    Text Solution

    |

  18. When light of wavelength 6000oerset@A falls on a metal surface, photoe...

    Text Solution

    |

  19. Calculate the de Broglie wavelength of proton, if its speed is 10^7 cm...

    Text Solution

    |

  20. Calculate the de Broglie wavelength of wave associated with a mass of ...

    Text Solution

    |

  21. Calculate the de Broglie wavelength of wave associated with a mass of ...

    Text Solution

    |