Home
Class 11
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)/((2m)))`

B

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

C

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

D

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

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ELECTRONS AND PHOTONS

    TARGET PUBLICATION|Exercise Evaluation Test|19 Videos
  • ELECTRONS AND PHOTONS

    TARGET PUBLICATION|Exercise Critical thinking|22 Videos
  • COMMUNICATION SYSTEMS

    TARGET PUBLICATION|Exercise Evaluation Test|15 Videos
  • ELECTROSTATICS

    TARGET PUBLICATION|Exercise EXCERCISE|156 Videos

Similar Questions

Explore conceptually related problems

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

Light of frequency 4nu_0 is incident on the metal of the threshold frequency nu_0 . The maximum kinetic energy of the emitted photoelectric is

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

The frequency of incident light falling on a photosensitive metal plate is doubled, the K.E of the emitted photo-electrons is

Photoelectric emission is observed from a metallic surface for frequencies v_(1) and v_(2) of the incident light rays (v_(1) gt v_(2)) . If the maximum values of kinetic energy of the photoelectrons emitted in the two cases are in the ratio of 1 : k , then the threshold frequency of the metallic surface is

The threshold frequency for a certain method is 3.3 xx 10^14 Hz . If light of frequency 8.2 xx 10^14 Hz is incident on the metal predict the cut-of voltage for the photoelectric emission.

TARGET PUBLICATION-ELECTRONS AND PHOTONS-Competitive Thinking
  1. When photons of energy hv fall on an aluminium plate (of work function...

    Text Solution

    |

  2. Assuming photoemission to take place , the factor by which the maximum...

    Text Solution

    |

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

    Text Solution

    |

  4. Radiation of wavelength lambda in indent on a photocell . The fastest ...

    Text Solution

    |

  5. The photoelectric threshold wavelength of silver is 3250 xx 10^(-10) m...

    Text Solution

    |

  6. When light of frequency v1 incident on a metal with work function W0 (...

    Text Solution

    |

  7. The maximum kinetic energy of the photoelectrons depends only on

    Text Solution

    |

  8. The velocity of photon is proportional to (where v is frequency)

    Text Solution

    |

  9. Which of the following statements is not correct?

    Text Solution

    |

  10. If E and P are the energy and the momentum of a photon respectively,th...

    Text Solution

    |

  11. is the wavelength of photon of energy 35 ke V.

    Text Solution

    |

  12. The maximum wavelength of radiation that can produce photoelectric eff...

    Text Solution

    |

  13. The momentum of a photon is 3.3xx10^(-29)kg-m/s. Its frequency will b...

    Text Solution

    |

  14. A photon of wavelength 4400 Å is passing through vaccum. The effective...

    Text Solution

    |

  15. The momentum of a photon is 2 xx 10^(-16) gm - cm//sec. Its energy is

    Text Solution

    |

  16. If the energy of a photon corresponding to a wavelength of 6000 Å is ...

    Text Solution

    |

  17. If we express the energy of a photon in KeV and the wavelength in angs...

    Text Solution

    |

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

    Text Solution

    |

  19. The work function of metal is 1 eV. Light of wavelength 3000 Å is inc...

    Text Solution

    |

  20. Energy from the sun is recived on earth at the rate of 2 cal per cm^(2...

    Text Solution

    |