Home
Class 12
PHYSICS
The work function of a metallic surface ...

The work function of a metallic surface is `5.01 eV`. The photo - electrons are emitted when light of wavelength `2000 Å` falls on it . The potential difference applied to stop the fastest photo - electrons is `[ h = 4.14 xx 10^(-15) eV sec]`

A

1.2 volt

B

2.24 volt

C

3.6 volt

D

4.8 volt

Text Solution

Verified by Experts

The correct Answer is:
1
Promotional Banner

Topper's Solved these Questions

  • DUAL NATURE OF RADIATION AND MATTER

    AAKASH INSTITUTE|Exercise ASSIGNMENT SECTION B.Objective (Only one answer)|6 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    AAKASH INSTITUTE|Exercise ASSIGNMENT SECTION C. Objective (More than one answer)|4 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    AAKASH INSTITUTE|Exercise Try Yourself|41 Videos

  • CURRENT ELECTRICITY

    AAKASH INSTITUTE|Exercise ASSIGNMENT SECTION-J|10 Videos

  • ELECTRIC CHARGES AND FIELDS

    AAKASH INSTITUTE|Exercise SECTION -J(Aakash Challengers Questions)|5 Videos

Similar Questions

Explore conceptually related problems

The work function of a metallic surface is 5.01 eV. The photoelectrons are emitted when light of wavelength 2000A falls on it. The potential difference applied to stop the fastest photoelectrons is

The photoelectric work function of a metal is 3 eV . The maximum kinetic energy of the emitted electrons when light of wavelength 3000 Å falls on it is

The work function of nickle is 5eV . When light of wavelength 2000A^(0) falls on it, emits photoelectrons in the circuit. The the potential difference necessary to stop the fastest electrons emitted is (given h=6.67xx10^(-34) Js )

A metal surface of work function 1.07 eV is irradiated with light of wavelength 332 nm . The retarding potential required to stop the escape of photo - electrons is

Work function of a metal surface is phi=1.5eV . If a light of wavelength 5000Å falls on it then the maximum K.E. of ejected electron will be-

The work function of tungsten is 4.50 eV . The wavelength of fastest electron emitted when light whose photon energy is 5.50 eV falls on tungsten surface, is

The work function of tungsten is 4.50 eV . The wavelength of fastest electron emitted when light whose photon energy is 5.50 eV falls on tungsten surface, is

The work function of a metal is 1.6 xx 10^(-19) J . When the metal surface is illuminated by the light of wavelength 6400 Å , then the maximum kinetic energy of emitted photo - electrons will be (Planck's constant h = 6.4 xx 10^(-34) Js )

The work function for a metal is 40 eV . To emit photo electrons of zero velocity from the surface of the metal the wavelength of incident light should be x nm .

AAKASH INSTITUTE-DUAL NATURE OF RADIATION AND MATTER -ASSIGNMENT SECTION A. Objective (Only one answer)
  1. Ultraviolet light of 6.2 eV falls on an aluminium surface (work functi...

    Text Solution

    |

  2. The work function for tungsten and sodium are 4.5 eV and 2.3 eV respec...

    Text Solution

    |

  3. The work function of a metallic surface is 5.01 eV. The photo - electr...

    Text Solution

    |

  4. A radio transmitter operates at a frequency of 880 kHz and a power of ...

    Text Solution

    |

  5. The photo-electrons emitted from a surface of sodium metal are such th...

    Text Solution

    |

  6. A photo cell is receiving light from a source placed at a distance of ...

    Text Solution

    |

  7. Stopping potential for photo electrons

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  10. The stopping potential V for photoelectric emission from a metal surfa...

    Text Solution

    |

  11. In an experiment on photoelectric effect the frequency f of the incide...

    Text Solution

    |

  12. If the work function of a metal is 'phi' and the frequency of the inci...

    Text Solution

    |

  13. The threshold frequency for a metallic surface correponds to an energy...

    Text Solution

    |

  14. Two identical photocathodes receive light of frequencies f1 and f2. If...

    Text Solution

    |

  15. Specific heat of water is 4.2 J//g.^(@)C. If light of frequency 3 xx 1...

    Text Solution

    |

  16. A red bulb and violet bulb of equal power emits n(R ) and n(v) number ...

    Text Solution

    |

  17. For a certain metal v is the five times of v(0) and the maximum veloci...

    Text Solution

    |

  18. Ultraviolet light of wavelength 66.26 nm and intensity 2 W//m^(2) fall...

    Text Solution

    |

  19. Two sources A and B have same power . The wavelength of radiation of A...

    Text Solution

    |

  20. The work function of a certain metal is 2.3 eV. If light of wave numbe...

    Text Solution

    |