Home
Class 12
PHYSICS
When a metal surface is exposed with a m...

When a metal surface is exposed with a monochromatic light, then all the photoelectrons are not emitted from the metal surface with the same kintetic energy. Why?

Text Solution

Verified by Experts

In photoelectric emission, the maximum KE is aquired by that electron which is most loosely bound to the metal. Since other electrons of metal require different energies for their emission, hence the different photoelectrons are emitted with different energy.
Promotional Banner

Topper's Solved these Questions

  • DUAL NATURE OF RADIATION AND MATTER

    PRADEEP|Exercise NCERT Exerciese question|1 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    PRADEEP|Exercise Short answer|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

Photoelectrons are emitted by a metal surface only when

The photoelectrons emitted from a metal surface:

Photoelectrons emitted from a metallic surface are

Photoelectrons emitted from a metal have

Photoelectrons emitted from a metallic surface are those which are

The photoelectron emitted from a metal surface are such that their velocity

The photo electrons emitted from the surface of sodium metal are

The photo-electrons emitted from a surface of sodium metal are such that

PRADEEP-DUAL NATURE OF RADIATION AND MATTER-Exercise
  1. When a metal surface is exposed with a monochromatic light, then all t...

    Text Solution

    |

  2. The photoelectric effect can be explained on the basis of

    Text Solution

    |

  3. Which of the following has minimum stopping potential?

    Text Solution

    |

  4. When radiation is incident on a photoelectron emitter, the potential i...

    Text Solution

    |

  5. Two photons, each of energy 2.5 eV are simultaneously incident on the ...

    Text Solution

    |

  6. The maximum velocity of an electron emitted by light of wavelength lam...

    Text Solution

    |

  7. The photoelectric work function for a metal surface is 4.125 eV. The c...

    Text Solution

    |

  8. The slope of frequency of incident light and stopping potential for a ...

    Text Solution

    |

  9. Threshold wavelength for a metal having work function w(0) is lambda. ...

    Text Solution

    |

  10. The work function for metals A , B and C are respectively 1.92 eV , 2....

    Text Solution

    |

  11. The wavelength of the matter wave is independent of

    Text Solution

    |

  12. If E(1), E(2), E(3), E(4) are the respective kinetic energies of elect...

    Text Solution

    |

  13. What is de-Broglie wavelength assciated with electron moving under a ...

    Text Solution

    |

  14. The minimum energy required by an electron to..........form the metal ...

    Text Solution

    |

  15. The maximum kinetic energy of emitted photoelectrons depends on the......

    Text Solution

    |

  16. The ratio of number of photoelectrons ejected to the number of the pho...

    Text Solution

    |

  17. For given photosenstive material, the photoelectric current is...........

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  21. Photon is not a..........but it is a.......... .

    Text Solution

    |