Home
Class 12
PHYSICS
Radiations of frequencies v1 and v2 are...

Radiations of frequencies `v_1 and v_2` are made to fall in turn, on a photosensitive surface. The stopping potential required for stopping the most energetic photoelectrons in the two cases are `V_1 and V_2` respectively. Obtain a formula for determining the threshold frequency in terms of these parameters.

A

`(e(V_1+V_2))/(upsilon_(1)+upsilon_(2))`

B

`(e(V_1-V_2))/(upsilon_(1)+upsilon_(2))`

C

`(e(V_2-V_1))/(upsilon_(2)-upsilon_(1))`

D

`(e(V_1-V_2))/(e(upsilon_(2)-upsilon_(1)))`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • DUAL NATURE OF MATTER AND RADIATION

    MTG GUIDE|Exercise AIPMT/ NEET MCQs|30 Videos

  • DUAL NATURE OF MATTER AND RADIATION

    MTG GUIDE|Exercise NEET Cafe Topicwise Practice Questions (DAVISSON AND GERMER EXPERIMENT)|2 Videos

  • CURRENT ELECTRICITY

    MTG GUIDE|Exercise MCQs AIPMT / NEET|32 Videos

  • ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENTS

    MTG GUIDE|Exercise AIPMT/NEET MCQS|31 Videos

Similar Questions

Explore conceptually related problems

Radiations of frequencies v_2 and v_2 are made to fall in turn, on a photosenstive surface. The stopping potential required for stopping the most energetic photoelectrons in the two cases are V_1 and V_2 respectively. Obtain a formula for determining the threshold freqeuncy in terms of these parameters.

When light off frequency v_1 is incident on a photosensitive surface , the stopping potential is V_1 . If the frequency of incident radiation becomes v_1//2 the stopping potential changes to V_2 Find out the expression for the threshold frequency for the surface in terms of V_1 and V_2 If the frequency of incident radiation is doubled , will the maximum kinetic energy of the photoelectrons also be doubled ? Given reason .

Two identical photo-cathodes receive light of frequencies v_1 and v_2 . If the velocities of the photoelectrons (of mass m) coming out are v_1 and v_2 respectively, then

Photoelectric emission is observed from a surface for frequencies v_1 and v_2 of the incident radiation ( v_1 gt v_2 ) if maximum kinetic energies of the photo electrons in the two cases are in the ratio 1:K, then the threshold frequency is given by :

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

represents a graph of most energetic photoelectrons K_(max) (in eV) and frequency v for a metal used as cathod in photoelectrons experiment. The threshold frequency of light for the photoelectric emission from the metal is

Photoelectric emission is observed from a surface for frequencies v_1 and v_2 of the incident radiation (v_1 gt v_2) . If the maximum kinetic energies of the photoelectrons in two cases are in ratio 1 : K then the threshold frequency v_0 is given by.

MTG GUIDE-DUAL NATURE OF MATTER AND RADIATION -CHECK YOUR NEET VITALS
  1. For what kinetic energy of a proton, will the associated de-Broglie wa...

    Text Solution

    |

  2. In photoelectric effect

    Text Solution

    |

  3. Radiations of frequencies v1 and v2 are made to fall in turn, on a ph...

    Text Solution

    |

  4. A particle moves in a closed orbit around the origin, due to a force w...

    Text Solution

    |

  5. A praticle of mass M at rest decays into two particle of masses m1 and...

    Text Solution

    |

  6. Photoelectric effect supports quantum nature of light because :

    Text Solution

    |

  7. The threshold frequency for a metallic surface corresponds to an energ...

    Text Solution

    |

  8. The work function of a substance is 3.68 eV. The longest wavelength of...

    Text Solution

    |

  9. The collector plate in an experiment on photoelectric effect is kept v...

    Text Solution

    |

  10. If K(1) and K(2) are maximum kinetic energies of photoelectrons emitte...

    Text Solution

    |

  11. An e-m wave of wavelength lambda is incident on a photo sensitive surf...

    Text Solution

    |

  12. If the kinetic energy of a particle is increased by 10 times, the perc...

    Text Solution

    |

  13. Light of frequency 7.21xx10^(14)Hz is incident on a metal surface. Ele...

    Text Solution

    |

  14. When a monochromatic point source of light is at a distance of 0.2 m f...

    Text Solution

    |

  15. A proton has kinetic energy E = 100 keV which is equal to that of a ph...

    Text Solution

    |

  16. Consider a metal exposed to light of wavelength 600nm. The maximum ene...

    Text Solution

    |

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

    Text Solution

    |

  18. In the Davisson and Germer experiment , the velocity of electrons emit...

    Text Solution

    |

  19. According to Einstein's photoelectric equation, the plot of the maximu...

    Text Solution

    |

  20. A photo-cell is illuminated by a source of light which is placed at a ...

    Text Solution

    |