Home
Class 12
PHYSICS
The energies of the incident photons are...

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

A

`3:4:5`

B

`1:3:5`

C

`1:1:1`

D

`5:3:1`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • DUAL NATURE OF RADIATION AND MATTER

    AAKASH SERIES|Exercise PRACTICE EXERCISEX|44 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    AAKASH SERIES|Exercise EXERCISE-I ASSERTION AND REASON|4 Videos

  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise EXERCISE - III|73 Videos

  • ELECTRIC CHARGES AND FIELDS

    AAKASH SERIES|Exercise Practice Exercise|57 Videos
AAKASH SERIES-DUAL NATURE OF RADIATION AND MATTER-EXERCISE=II
  1. In a photo electric experiment, photon of energy 5 eV are incident on ...

    Text Solution

    |

  2. Light of wavelength 5000^(@)A falls on a sensitive plate with photo el...

    Text Solution

    |

  3. The energies of the incident photons are 3, 4, 5 eV. The work function...

    Text Solution

    |

  4. Radiations of two different frequencies whose photon energies are 3.4 ...

    Text Solution

    |

  5. Sodium and copper have work functions 2.3eV and 4.5eV respectively, th...

    Text Solution

    |

  6. A graph is drawn between stopping potential (y-axis) and incident freq...

    Text Solution

    |

  7. A photo cell is illuminated by a small bright source placed (1)/(2) m ...

    Text Solution

    |

  8. A photon incident on a metal of photo electric work function 2 ev prod...

    Text Solution

    |

  9. For a certain metal the threshold frequency is v(0). If light of frequ...

    Text Solution

    |

  10. In a photoelectric cell, current stops when a negative potential of 0....

    Text Solution

    |

  11. The K.E. of photo electron ejected from a metal surface by light of wa...

    Text Solution

    |

  12. The work function of potassium is 2.0 eV. When it is illuminated by li...

    Text Solution

    |

  13. Photo electric emission is observed from a metallic surface for freque...

    Text Solution

    |

  14. When radiation of the wavelength lamdais incident on a metallic surfac...

    Text Solution

    |

  15. K(1) and K(2) are the maximum kinetic energies of the photo electrons ...

    Text Solution

    |

  16. Light of frequency 1.5 times the threshold frequency is incident on a ...

    Text Solution

    |

  17. The maximum wavelength of a beam of light can be used to produce photo...

    Text Solution

    |

  18. The work function of a material is 5.3 eV and the stopping potential f...

    Text Solution

    |

  19. The energy flux of sunlight reaching the surface of the earth is 1.388...

    Text Solution

    |

  20. The threshold frequency for a certain metal is v(0). When a certain ra...

    Text Solution

    |