Home
Class 12
PHYSICS
If work function of a metal plate is neg...

If work function of a metal plate is negligible, then find the K.E. of the photoelectrons emitted when radiations of `1000Å` are incident on the metal surface

A

11.6 eV

B

12:4 eV

C

13.6 eV

D

14.4 eV

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ELECTRONS & PHOTONS

    MODERN PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS (LEVEL-II)|63 Videos
  • ELECTRONS & PHOTONS

    MODERN PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS (LEVEL-III)|9 Videos
  • ELECTROMAGNETIC WAVES

    MODERN PUBLICATION|Exercise RECENT COMPETITIVE QUESTIONS|4 Videos
  • ELECTROSTATICS

    MODERN PUBLICATION|Exercise RECENT COMPETITIVE QUESTIONS |39 Videos

Similar Questions

Explore conceptually related problems

The photo electric threshold for a metal surface is 5800 Å. Calculate the kinetic energy of a photoelectron, when a light of wavelength 4500 Å is incident on the metal surface.

The threshold wavelength of photo sensitive metal is 5000 A .Find the velocity of the photoelectrons emitted by it when wavelength of 4000A is incident on it.

The work function for a certain metal is 4.2 eV. Will this metal give photoelectric emission for incident radiation of wavelength 330 nm?

When light of frequency 6 xx 10^(14) Hz is incident on a photosensitive metal, the kinetic energy of the photoelectron ejected is 2e V. Calculate the kinetic energy of the photoelectron in eV when light to frequency 5 xx 10^(14) Hz is incident on the same metal. Given Planck's constant, h = 6.625 xx 10^(-34) Js , 1 eV = 1.6 xx 10^(-19) .

The threshold wavelength for a metal is 4000 Å. A radiation of wavelength 5000 Å is incident on the metal. Can it cause P.E.E?

According to Einstein's photoelectric equation the graph of K.E. of the photoelectron emitted from the metal versus the frequency of the incident radiation gives a straight line graph whose slope

MODERN PUBLICATION-ELECTRONS & PHOTONS-RECENT COMPETITIVE QUESTIONS
  1. If work function of a metal plate is negligible, then find the K.E. of...

    Text Solution

    |

  2. According to Einstein's photoelectric equation the graph of K.E. of th...

    Text Solution

    |

  3. An electron is moving in an orbit of a hydrogen atom from which there ...

    Text Solution

    |

  4. v(1) is the frequency of the series limit of Lyman series, v(2) is te ...

    Text Solution

    |

  5. The de-Broglie wavelength of the electron in the ground state of the h...

    Text Solution

    |

  6. The photoelectric threshold wavelength for silver in lambda(0).The ene...

    Text Solution

    |

  7. An electron of mass m(e) and a proton of mass m(p) are moving with the...

    Text Solution

    |

  8. Pick out the wrong statement.

    Text Solution

    |

  9. A proton and an alpha particle are accelerated through the same potent...

    Text Solution

    |

  10. In hydrogen atom , electron excites from ground state of higher energy...

    Text Solution

    |

  11. An alpha - particle and a proton moving with the same kinetic energy e...

    Text Solution

    |

  12. X- rays, gamma rays and microwaves travelling in vacuum have

    Text Solution

    |

  13. If n is the orbit number of the electron in a hydrogen atom , the corr...

    Text Solution

    |

  14. A charged particle with a velocity 2 xx 10^3 ms^-1 passes undeflected ...

    Text Solution

    |

  15. Maximum velocity of the photoelectron emitted by a metal is 1.8 xx 10^...

    Text Solution

    |

  16. lamda(1) and lamda(2) are used to illuminated the slits. beta(1) and b...

    Text Solution

    |

  17. What is the de Broglie wavelength of the electron accelerated through ...

    Text Solution

    |

  18. The maximum kinetic energy of emitted photoelectrons depends on

    Text Solution

    |

  19. Find the de-Broglie wavelength of an electron with kinetic energy of 1...

    Text Solution

    |

  20. Light of two different frequencies whose photons have energies 1 eV an...

    Text Solution

    |

  21. The best waves for emission of electrons from a surface :

    Text Solution

    |