Home
Class 12
PHYSICS
The potential difference that must be ap...

The potential difference that must be applied to stop the fastest photoelectrons emitted by a nickel surface , having work function `5.01 eV` , when ultraviolet light of `200 nm` falls on it , must be

A

1.2 V

B

2.4 V

C

`-1.2 V`

D

`-2.4 V

Text Solution

Verified by Experts

The correct Answer is:
1
`eV_(0) = (hc)/(lambda) - w_(0)`
`V_(0) = (hc)/(lambda_(e)) - (w_(0))/( e)`.
Promotional Banner

Topper's Solved these Questions

  • DUAL NATURE OF RADIATION AND MATTER

    NARAYNA|Exercise EXERCISE - 4|25 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    NARAYNA|Exercise ASSERTION AND REASON|15 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    NARAYNA|Exercise EXERCISE - 2 (H.W)|20 Videos

  • CURRENT ELECTRICITY

    NARAYNA|Exercise Level 6|43 Videos

  • DUAL NATURE

    NARAYNA|Exercise LEVEL-II (H.W)|17 Videos

Similar Questions

Explore conceptually related problems

What potential difference must be applied to stop the fastest photoelectrons emitted by a nickel surface under the action of ultraviolet light of wavelength 2000Å ? The work function of nickel is 5.01 eV.

Will photoelectrons be emitted from a copper surface, of work function 4.4 eV , when illuminated by a visible light?

Five volt of stopping potential is needed for the photoelectrons emitted out of a surface of work function 2.2 eV by the radiation of wavelength

A photon of energy 12 V falls on metal surface whose work function is 4.15 eV . The stopping potential is

What is the stopping potential, when a metal surface with work function 1.2 eV is illuminated with light of energy 3 eV ?

(a) The work function for the surface of aluminium is 4.2eV. Find potential difference will be required to stop the emission of maximum kinetic energy photoelectrons emitted by light of 1800Å wavelenght? (b) Determine the wavelength of that incident light for which stopping potential will be zero? (h=6.6xx10^(-34))

A photon of energy 7 eV is incident on a metal surface having the work function of 3.75 eV. What is the stopping potential ?

Calculate the value of retarding potential in volt needed to stop the photoelectron ejected from a metal surface of work function 1.29 eV with light frequency of 5.5 xx 10^(14) sec^(-1) (nearly)

The stopping potential for photoelectrons ejected from a photosensitive material of work function 1.6 ev, when photons of energy 2.4 eV are incident on it, is

The stopping potential for the photoelectrons emitted from a metal surface of work function 1.7 eV is 10.4 V. Find the wavelength of the radiaiton used. Also, identify the energy levels in hydrogen atom, which will emit this wavelength.

NARAYNA-DUAL NATURE OF RADIATION AND MATTER-EXERCISE - 3
  1. A 0.66 kg ball is moving wih a speed of 100 m//s. The associated wavel...

    Text Solution

    |

  2. When monochromatic radiation of intensity I falls on a metal surface, ...

    Text Solution

    |

  3. The potential difference that must be applied to stop the fastest phot...

    Text Solution

    |

  4. Photoelectric emission occurs only when the incident light has more th...

    Text Solution

    |

  5. In photoelectric emission process from a metal of work function 1.8 eV...

    Text Solution

    |

  6. The threshold frequency for a certain metal is 3.3xx10^(14) Hz. If lig...

    Text Solution

    |

  7. Electrons used in an electron microscope are accelerated by a voltage ...

    Text Solution

    |

  8. Monochromatic radiation emitted when electron on hydrogen atom jumps f...

    Text Solution

    |

  9. Lights of two different frequencies whose photons have energies 1 and ...

    Text Solution

    |

  10. A alpha -parhticle moves in a circular path of radius 0.83 cm in th...

    Text Solution

    |

  11. If the momentum of an electron is changed by p, then the de - Broglie ...

    Text Solution

    |

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

    Text Solution

    |

  13. If velocity of a particle is 3 times of that of electron and ratio of ...

    Text Solution

    |

  14. The wavelength lambda(e ) of an electron and lambda(p) of a photon of...

    Text Solution

    |

  15. If the kinetic energy of the particle is increased to 16 times its pre...

    Text Solution

    |

  16. Light with an enargy flux of 25xx10^(4) Wm^(-2) falls on a perfectly r...

    Text Solution

    |

  17. When the energy of the incident radiation is increased by 20 % , kinet...

    Text Solution

    |

  18. When a certain metallic surface is illuminated with mono chromatic lig...

    Text Solution

    |

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

    Text Solution

    |

  20. Light of wavelength 500 nm is incident on a metal with work function 2...

    Text Solution

    |