Home
Class 12
PHYSICS
Two photons of energies twice and thrice...

Two photons of energies twice and thrice the work function of a metal are incident on the metal surface .Then, the ratio of maximum velocities of the photoelectrons emitted in the two cases respectively ,is

A

`sqrt2:1`

B

`sqrt3:3`

C

`sqrt3:sqrt2`

D

`1:sqrt2`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • DUAL NATURE OF RADIATION AND MATTER

    AAKASH SERIES|Exercise EXERCISE=II|42 Videos
  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise EXERCISE - III|73 Videos
  • ELECTRIC CHARGES AND FIELDS

    AAKASH SERIES|Exercise Practice Exercise|57 Videos

Similar Questions

Explore conceptually related problems

Two photons of energy 2.5 eV and 3.5 eV fall on a metal surface on work function 1.5 eV. The ratio of the maxium velocities of the photoelectrons emitted from the metal surface is

The energies of the incident photons are 3, 4, 5 eV. The work functions of the metals are 0.5, 1.5, 2.5 eV. The maximum K.E.s of the photo electrons are in the ratio

Electrons from n = 2 to n= 1 in hydrogen atom is made to fall on a metal surface with work function 1.2ev. The maximum velocity of photo electrons emitted is nearly equal to

Photoelectric emission is observed from a metallic surface for frequencies v_(1) and v_(2) of the incident light rays (v_(1)gtv_(2)) .If the maximum value of kinetic energy of the photoelectrons emitted in the two cases are in the ratio 1:k,then the threshold frequency of the metallic surface is

Photoelectric emission is observed from a metallic surface for frequencies v_(1) and v_(2) of the incident light (v_(1)gtv_(2)) .If the maximum values of kinetic energy of the photoelectrons emitted in the two cases are in the ratio 1:n, then the threshold frequency of the metallic surface is

The threshold frequency for a certain metal is v_(0) . When a certain radiation of frequency 2v_(0) is incident on this metal surface the maximum velocity of the photoelectrons emitted is 2xx10^(6)ms^(-1) . If a radiation of frequency 3v_(0) , is incident on the same metal surface the maximum velocity of the photoelectrons emitted (in m.s^(-1) ) is

The work function of a metal is 4.2eV. If the radiation of 2000Å falls on the metal, find the kinetic energy of the metal

The photoelectric work function for a metal surface is 4.125eV. The cut -off wavelength for this surface is

AAKASH SERIES-DUAL NATURE OF RADIATION AND MATTER-PRACTICE EXERCISEX
  1. Monochromatic light incident on a metal surface emits electron with K....

    Text Solution

    |

  2. Three metals have work functions in the ratio 2 3:4. Graphs are drawn ...

    Text Solution

    |

  3. Two photons of energies twice and thrice the work function of a metal ...

    Text Solution

    |

  4. The work function of a substance is 4eV. The longest wavelength of lig...

    Text Solution

    |

  5. The photo electric work function of a metal is 1 eV. Light of wave len...

    Text Solution

    |

  6. When a mono chromatic point source of light is at a distance of 0.2m f...

    Text Solution

    |

  7. The work function of a substance is 12.4 eV. The longest wavelength of...

    Text Solution

    |

  8. A surface irradiated with light of wave length 480 nm gives out electr...

    Text Solution

    |

  9. The photoelectric threshold wavelength for a certain metal is 4000A^(@...

    Text Solution

    |

  10. What P.D. must be applied to stop the fastest photo electron emitted b...

    Text Solution

    |

  11. The threshold frequency for photo electric effect for a metal surface ...

    Text Solution

    |

  12. The work functions of metals A and B are in the ratio 1 : 2. If light ...

    Text Solution

    |

  13. When a metal surface is illuminated by a light of wavelength 400nm and...

    Text Solution

    |

  14. V(1) and V(2) are the stopping potentials for the incident radiations ...

    Text Solution

    |

  15. A monochromatic light source is placed at a distance d from a metal su...

    Text Solution

    |

  16. If the work function of a certain metal is 3.2xx10^(-19)J and is it il...

    Text Solution

    |

  17. Work function of a metal is 3.0 eV. It is illuminated by a light of wa...

    Text Solution

    |

  18. A metal sheet of silver is exposed to ultraviolet radiation of wavelen...

    Text Solution

    |

  19. The threshold wavelength for emission of photoelectrons from a metal s...

    Text Solution

    |

  20. What will be the minimum frequency of light source to get photocurrent...

    Text Solution

    |