Home
Class 12
PHYSICS
A metal surface of work function 1.07 eV...

A metal surface of work function `1.07 eV` is irradiated with light of wavelength `332 nm`. The retarding potential required to stop the escape of photo - electrons is

A

3.74V

B

2.67V

C

1.0V

D

4.81V

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    DISHA|Exercise Physics|50 Videos

  • ELECTROMAGNETIC INDUCTION

    DISHA|Exercise Physics|55 Videos

Similar Questions

Explore conceptually related problems

Find the retarding potential required to stop electron of the de Broglie wavelength 0.5 nm

The work function of a metallic surface is 5.01 eV. The photoelectrons are emitted when light of wavelength 2000A falls on it. The potential difference applied to stop the fastest photoelectrons is

The work function of a metallic surface is 5.01 eV . The photo - electrons are emitted when light of wavelength 2000 Å falls on it . The potential difference applied to stop the fastest photo - electrons is [ h = 4.14 xx 10^(-15) eV sec]

When a metal surface is illuminated by a monochromatic light of wave-length lambda , then the potential difference required to stop the ejection of electrons is 3V . When the same surface is illuminated by the light of wavelength 2lambda , then the potential difference required to stop the ejection of electrons is V . Then for photoelectric effect, the threshold wavelength for the metal surface will be

Electrons with maximum kinetic energy 3eV are ejected from a metla surface by ultraviolet radiation of wavelength 1500Å . Determine the work function of the metal, the threshold wavelength of metal and the stopping potential difference required to stoop the emission of electrons.

The work function of metal is 1 eV . Light of wavelength 3000 Å is incident on this metal surface . The velocity of emitted photo - electrons will be

A sodium (Na) surface is illuminated with light of wavelength 300 nm . The work function for Na metal is 2.46eV . The kinetic enegry of the ejected photoelectrons is

The work function of a metal is 4.0 eV . If the metal is irradiated with radiation of wavelength 200 nm, then the maximum kinetic energy of the photoelectrons would be about.

The surface of a metal is illuminated with light of wavelength 400 nm. The kinetic energy of the ejected photoelectrons was found to be 1.68 eV. What is the work function of the metal ? [ hC=1240 eV*nm ]

The stopping potential for the photo-electrons emitted from a metal surface of work-function 1.7 eV is 10.4 eV. Find the wavelength of the radiation used. Also identify the energy-levels in hydrogen atom which will emit this wavelength.

DISHA-DUAL NATURE OF MATTER AND RADIATION-Physics
  1. A hydrogen atom moving at a speed v absorbs a photon of wavelength 122...

    Text Solution

    |

  2. The de-Broglie wavelenght of an electron is 0.2 overset(@)A. Calculate...

    Text Solution

    |

  3. A photon and an electron have equal energy E . lambda("photon")//lambd...

    Text Solution

    |

  4. In a photoemissive cell, with exciting wavelength lambda, the faster e...

    Text Solution

    |

  5. Which of the following figure represents the variation of particle mom...

    Text Solution

    |

  6. The work function for the surface of aluminium is 4.2 eV. What will be...

    Text Solution

    |

  7. Slope of V(0)-v curve is- (where V(0)= Stopping potential and v=freq...

    Text Solution

    |

  8. An AIR station is broadcasting the waves of wavelength 300 metres. If ...

    Text Solution

    |

  9. A metal surface of work function 1.07 eV is irradiated with light of w...

    Text Solution

    |

  10. The fig. shows the variation of photon current with anode potential fo...

    Text Solution

    |

  11. An electromagnetic radiation of frequency 3xx10^(15) cycles per second...

    Text Solution

    |

  12. Ultraviolet light of wavelenght 280 nm is used in an experiment on pho...

    Text Solution

    |

  13. The separation between Bragg's planes in a crystal is 10overset(@)A. T...

    Text Solution

    |

  14. Electrons are accelerated in television tubes through potential differ...

    Text Solution

    |

  15. A physicist wishes to eject electrons by shining light on a metal surf...

    Text Solution

    |

  16. A physicist wishes to eject electrons by shining light on a metal surf...

    Text Solution

    |

  17. A physicist wishes to eject electrons by shining light on a metal surf...

    Text Solution

    |

  18. Assertion : Mass of moving photon varies inversely as the wavelength ....

    Text Solution

    |

  19. Assertion : Photosensitivity of a metal is high if its work function i...

    Text Solution

    |

  20. Assertion : The de - Broglie wavelength of a molecule varies inversely...

    Text Solution

    |