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 2v impinges 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

`2 sqrt((hv)/m)`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    SARAS PUBLICATION|Exercise EXAMPLE|42 Videos

  • ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENTS

    SARAS PUBLICATION|Exercise EXAMPLE|29 Videos

Similar Questions

Explore conceptually related problems

In photoelectric emission, a radiation whose frequency is 4 times threshold frequency of a certainn metal is incident on the metal. The an the maximum possible velocity of the emitted electron will be…………………

Light frequency v falls on material of threshold frequency v_(0) , the maximum K.E. of emitted electron is proportional to

The threshold frequcney for a certain metal is 3.3xx10^(14) Hz. If light of frequency 8.2xx10^(14) Hz is incident on the metal, predict the cut-off voltage for the photoelectric emission.

If e/m of electron is 1.76xx10^(11)Ckg^(-11) and the stopping potential is 0.71 V, then the maximum velocity of the photoelectron is

Light of wavelength 390 nm is directed at a metal electrode. To find the energy of electrons ejected, an opposing potential difference is established between it and another electrode. The current of photoelectrons from one to the other is stopped completely when the potential difference is 1.10 V. Determine (i) the work function of the metal and (ii) the maximum wavelength of light that can electrons from this metal.

The work function of a metal is hv_(0) . Light of frequency v falls on this metal. The photoelectric effect will take place only if

The work function of caesium metal is 2.14 eV. When light of frequency 6xx10^(14)Hz is incident on the metal surface, photoemission of electrons occurs. What is the a. maximum kinetic energy of the emitted electrons, b. stopping potential, and c. maximum speed of the emitted photoelectrons ?

SARAS PUBLICATION-DUAL NATURE OF MATTER AND RADIATION-EXAMPLE
  1. Two sources of sound placed close to each othe , are emitting progress...

    Text Solution

    |

  2. A certain mass of hydrogen is changed to Helium by the process of fusi...

    Text Solution

    |

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

    Text Solution

    |

  4. In young's double slit experiment , the slits are 2mm apart and are il...

    Text Solution

    |

  5. A parallel beam of fast moving electron is incident normally on a narr...

    Text Solution

    |

  6. An electron in hydrogen atom makes a transition n1 rarr n2 Where n1 an...

    Text Solution

    |

  7. The de- Broglie wavelength of neutrons in thermal equilibrium at temp...

    Text Solution

    |

  8. A certain number of spherical drops a liquid of radius r coalesce to f...

    Text Solution

    |

  9. The angle of a prism is A , One of its refracting surface is slivered ...

    Text Solution

    |

  10. When the energy of the incident radiation is increased by 20%, the kin...

    Text Solution

    |

  11. A photoelectric surface is illuminated successively by monochromatic l...

    Text Solution

    |

  12. On observing light from three different stars P,Q and R , it was found...

    Text Solution

    |

  13. Consider 3rd orbit of He+ (Helium), using non- relativistic approach, ...

    Text Solution

    |

  14. Which of the following figures represent the variation of particle mom...

    Text Solution

    |

  15. A certain metallic surface is illuminated with manochromatic light of ...

    Text Solution

    |

  16. Electrons of mass m with de - Broglie wavelength , lambdafall on the t...

    Text Solution

    |

  17. Photons with energy 5eV are incident on a cathode C in a photoelectric...

    Text Solution

    |

  18. When a metallic surface is illuminated with radiation of wavelength la...

    Text Solution

    |

  19. An electron of mass m and photon have same energy E. The ratio of de-B...

    Text Solution

    |

  20. The de- Broglie wavelength of neutrons in thermal equilibrium at temp...

    Text Solution

    |