Home
Class 12
PHYSICS
The minimum energy required to ejected a...

The minimum energy required to ejected an electron from the surface of a metal is called............ .

Text Solution

Verified by Experts

The correct Answer is:
threshold frequency
Promotional Banner

Topper's Solved these Questions

  • DUAL NATURE OF RADIATION AND MATTER

    PRADEEP|Exercise Value based question|1 Videos

  • CURRENT ELECTRICITY

    PRADEEP|Exercise Problems for Practice (B)|2 Videos

  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    PRADEEP|Exercise Multiple Choice Questions|1 Videos

Similar Questions

Explore conceptually related problems

The minimum energy required to eject an electron from an atom is called

The minimum energy required to remove an electron is called

The minimum energy required for the emission of photoelectron from the surface of a metal is 4.95 xx10^(-19)J . Calculate the critical frequency of the photon required to eject the electron . h = 6.6 xx10^(-34) J sec

What is the name given to the minimum energy of incident radiation required to free an electron from the surface of a metal?

When electromagnetic radiaiton of wavelength 300 nm falls on the surface of sodium electrons are emitted with a kinetic enegry of 1.68xx10^(5)Jmol^(-) . What is the minimum enegry needed to remove an electorn from sodium? Strategy: The minimum enegry required to remove an electron from target metal is called work function W_(0) of the metal. It can be calculated from Eq., provided we know the energy of the incident photon and kinetic enegry of a single photoelectorn.

The minimum energy required for the electron emission from the metal surface can be supplied to the free electrons by which of the following physical processes ?

Minimum energy required to takeout the only one electron from ground state of He^(+) is

The minimum energy required by an electron to..........form the metal surface so as to overcome the restraining forces at the surface is called........... .

PRADEEP-DUAL NATURE OF RADIATION AND MATTER-Exercise
  1. For given photosenstive material, the photoelectric current is...........

    Text Solution

    |

  2. An increase in the frequency of the incident light.............the vel...

    Text Solution

    |

  3. The minimum energy required to ejected an electron from the surface of...

    Text Solution

    |

  4. In photoelectric effect the energy of the free electron does not depen...

    Text Solution

    |

  5. Photon is not a..........but it is a.......... .

    Text Solution

    |

  6. The velocity of photons different media is............. .

    Text Solution

    |

  7. The intensity of light depends upon the.........present in light.

    Text Solution

    |

  8. The momentum of a photon of energy E is............and of wavelength l...

    Text Solution

    |

  9. De-Broglie wave are associated with a moving particle irrespective of....

    Text Solution

    |

  10. The de-broglie wavelength of a photon of an electromagnetic radiation ...

    Text Solution

    |

  11. A photon and electron have got same de-Broglie wavelength. Total energ...

    Text Solution

    |

  12. The expression for de-Broglie wavelength of an electron moving under a...

    Text Solution

    |

  13. The main aim of Davisson-Germer experiment is to verify............ .

    Text Solution

    |

  14. Given in fig. is the graph between frequency v of the incident light a...

    Text Solution

    |

  15. For photoelectric effect in sodium, fig. shows the plot of cut-off vol...

    Text Solution

    |

  16. When light of wavelength 400nm is incident on the cathode of photocell...

    Text Solution

    |

  17. Radiation of a certain wavelength causes electrons with a maximum kine...

    Text Solution

    |

  18. The electric field associated with a monochromataic beam of light beco...

    Text Solution

    |

  19. Ultraviolet light of wavelength 800 A and 700 A when allowed to fall ...

    Text Solution

    |

  20. Light of wavelength 2000 Å falls on an aluminium surface . In aluminiu...

    Text Solution

    |