Home
Class 12
PHYSICS
The work function is...

The work function is

A

same for all metals

B

different for different metals

C

small for heavy metals

D

dependent on the frequency of incident radiation .

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • DUAL NATURE OF MATTER AND RADIATION

    BINA LIBRARY|Exercise EXERCISE|68 Videos
  • CURRENT ELECTRICITY

    BINA LIBRARY|Exercise EXERCISE|107 Videos
  • ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENT

    BINA LIBRARY|Exercise EXERCISE|101 Videos

Similar Questions

Explore conceptually related problems

The work function of caesium is 2.14 eV . Find Threshold frequency for caesium

The work function of a metal is 3.45 eV. Calculate what should be the maximum wave length of a photon that can eject photo - electron from the metal.

The work function of Al is 4.2 eV. Find the W.L . Of the incident light if the photo current is brought to zero by a stopping potential of 0.80 eV.

The work function of caesium is 2.14 eV . Find The wavelength of incident light if the photo current is brought to zero by stopping potential of 0.60 V.

The work function of a metallic surface is 2.5 eV. Ultraviolet light of wavelength 2000Å is allowed to be incident on the metallic surface. Calculate Stopping potential. (Given Planck's constant h = 6.63 xx 10^(-34) J-s , electronic charge e = 1.6 xx 10^(-19) C, electron mass m = 9.1 xx 10^( -31) kg

The working function for a certain metal is 4.2ev. Will these metal give photoelectric emision for incident radiation of wave length 330 nm.

If the work function of two metals X and Y are 4.17eV and 8.24x10^(-19) J respectively, then for which metal lesser amount of energy will be required to emit an electron?

BINA LIBRARY-DUAL NATURE OF MATTER AND RADIATION-EXERCISE
  1. An electron and a proton are having same kinetic energy. Which of them...

    Text Solution

    |

  2. A photon and an electron have the same de Broglie wavelength. Which ha...

    Text Solution

    |

  3. Explain why rainbow is never seen on the surface of the moon.

    Text Solution

    |

  4. The maximum kinetic energy of photoelectrons emitted from a surface wh...

    Text Solution

    |

  5. Define lens.

    Text Solution

    |

  6. The work function of caesium is 2.14 eV . Find Threshold frequency fo...

    Text Solution

    |

  7. The work function of caesium is 2.14 eV . Find The wavelength of inci...

    Text Solution

    |

  8. For what kinetic energy of a neutron will the associated de - Broglie ...

    Text Solution

    |

  9. Calculate the Momentum of the electrons accelerated through a potentia...

    Text Solution

    |

  10. Calculate the Momentum of the electrons accelerated through a potentia...

    Text Solution

    |

  11. The energy of a photon is 3 xx 10^(-19) joules. Its momentum is

    Text Solution

    |

  12. The photoelectric effect proves that

    Text Solution

    |

  13. In a photo electric effect kinetic energy of photo electron depend upo...

    Text Solution

    |

  14. Photo cell is a device which converts

    Text Solution

    |

  15. The work function is

    Text Solution

    |

  16. The fact that the photon carries momentum was established by

    Text Solution

    |

  17. Planck's constant has same dimensions as

    Text Solution

    |

  18. If an electron and a photon propagate in form of waves having same wav...

    Text Solution

    |

  19. What will happen to de- Broglie wavelength if the velocity of the elec...

    Text Solution

    |

  20. The dimension of Planck's constant is same as that of

    Text Solution

    |