Home
Class 12
PHYSICS
For photoelectric emission from certain ...

For photoelectric emission from certain metal the cut - off frequency is `v`. If radiation of frequency `2 v` incident on the metal plate , the maximum possible velocity of the emitted electron will be (`m` is the electron mass).

A

`sqrt(hv //m)`

B

`sqrt(2 hv//m)`

C

`2 sqrt(hv//m)`

D

`sqrt(hv//(2m))`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    NIKITA PUBLICATION|Exercise MCQs|431 Videos

  • ELECTROSTATICS

    NIKITA PUBLICATION|Exercise Multiple Choice Questions|458 Videos

Similar Questions

Explore conceptually related problems

For photoelectric emission from certain metal the cut - off frequency is v . If radiation of frequency 2 v impinges on the metal plate , the maximum possible velocity of the emitted electron will be ( m is the electron mass).

The photoelectric threshold frequency of a metal is v_0. When ligth of frequency 3v_0 is incident on the metal, the maximum kinetic energy of emitted photoelectrons will be

The photoelectric threshold frequency of a metal is v. When light of frequency 4v is incident on the metal . The maximum kinetic energy of the emitted photoelectrons is

Light of frequency 4 v_(0) is incident on the metal of the threshold frequency v_(0) . The maximum kinetic energy of the emitted photoelectrons is

Light of frequency v is incident on a substance of threshold frequency v(v lt v) . The energy of the emitted photo-electron will be

A photon of frequency v is incident on a metal surface whose threshold frequency is v_(0) . The kinetic energy of the emitted photoelectrons will be

NIKITA PUBLICATION-ELECTRONS AND PHOTONS -MCQs
  1. An electron is projected in a perpendicular uniform magnetic field of ...

    Text Solution

    |

  2. The stopping potential of a given photoelectric device is depended on

    Text Solution

    |

  3. The radiations of 1 eV and 2.5 eV are incident on a metal having a wor...

    Text Solution

    |

  4. When temperature of a metal increases ,

    Text Solution

    |

  5. An electron is fired through a region of crossed electric and magneti...

    Text Solution

    |

  6. A charge q , and mass m , is fired perpendicular to a magnetic field (...

    Text Solution

    |

  7. The stopping potential of a photoelectric diode is 9 volts. e//m = 1.8...

    Text Solution

    |

  8. An electron enters in a magnetic held of induction 2 m T with velocity...

    Text Solution

    |

  9. Speed of an electron passing undeviated through a region of cross elec...

    Text Solution

    |

  10. In photoelectric effect if the intensity of light is doubled then maxi...

    Text Solution

    |

  11. Calcium plate has maximum possible radiation of wavelength 1 of 400 nm...

    Text Solution

    |

  12. Two particles of equal charges after being accelerated through the sa...

    Text Solution

    |

  13. If the wavelength lambda of photon decreases then momentum and energy ...

    Text Solution

    |

  14. In Milikan's experiment , an oil drop having charge q, mass m , gets a...

    Text Solution

    |

  15. If a charge particle of charge q , mass m , moves in a circular path i...

    Text Solution

    |

  16. In photoelectric effect, stopping potential for a light of frequency n...

    Text Solution

    |

  17. For photoelectric emission from certain metal the cut - off frequency ...

    Text Solution

    |

  18. The wavelength lamda(e) of an electron and lamda(p) of a photon of sam...

    Text Solution

    |

  19. Light of wavelength lambda(A) and lambda(B) falls on two identical met...

    Text Solution

    |

  20. When monochromatic light of wavelength lambda is incident on a metal...

    Text Solution

    |