Home
Class 12
PHYSICS
Do all the electrons that absorb a photo...

Do all the electrons that absorb a photon come out as photoelectrons?

Promotional Banner

Topper's Solved these Questions

  • UNIT TEST -07

    MODERN PUBLICATION|Exercise EXERCISE|154 Videos
  • UNIT TEST -06

    MODERN PUBLICATION|Exercise EXERCISE|461 Videos
  • UNIT TEST-05

    MODERN PUBLICATION|Exercise EXERCISE|69 Videos

Similar Questions

Explore conceptually related problems

Radiation of wavelength 5000 oversetcircA and of intensity 2xx10^-3w cm^-2 falls on a photosensitive surface. Assuming that every absorbed photon results in the ejection of photoelectron, find how many photoelectrons are produced per cm^2 per sec.

An n-type semiconductor is the one which has excess of free electrons and p-type semiconductor is deficient in these. When a p-n junction is formed, the electrons should flow from n to p region. But all the electrons do not do so. Explain, why.

Calculate the threshold wavelength of photons, which can emit photoelectrons from cesium. Given that work function of cesium=1.8 eV.

Can a hydrogen atom absorb a photon whose energy exceeds its energy?

Do all the stars in the sky move ? Explain.

A hydrogen atom initially in the ground level absorbs a photon, which excites it to the n = 4 level. Determine the wavelength and frequency of photon.

MODERN PUBLICATION-UNIT TEST -07-EXERCISE
  1. Do all the electrons that absorb a photon come out as photoelectrons?

    Text Solution

    |

  2. The photon of frequency v has a momntum associated with it .If c is th...

    Text Solution

    |

  3. The time taken by a photoelectron to come out after the photon strikes...

    Text Solution

    |

  4. Work function of a metl surface is 4.2 eV. The maximum wavelength whic...

    Text Solution

    |

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

    Text Solution

    |

  6. A photocell is illuminated by a small bright source placed 1 m away .w...

    Text Solution

    |

  7. According to Einstein's photoelectric equation, the graph between kine...

    Text Solution

    |

  8. The surface of a metal is illuminted with the light of 400 nm.the kine...

    Text Solution

    |

  9. The threshold freuency for a metallic surface corresponds to an energy...

    Text Solution

    |

  10. This question has statement - 1 and statement - 2 of the four choice g...

    Text Solution

    |

  11. Two identical photocathodes receive the light of frequencies f1 and f2...

    Text Solution

    |

  12. The anode vollage of a photocell is kept fixed . The wavelength lambda...

    Text Solution

    |

  13. The de-Broglie wavelength of a tennis ball of mass 60 g moving wiht a ...

    Text Solution

    |

  14. If the kinetic energy of a free electron doubles,its de-Broglie wavele...

    Text Solution

    |

  15. A radiation of energy E falls normally on a perfecly reflecting surfac...

    Text Solution

    |

  16. Direction:Answer the MCQ no.15 to 17 on the basis of the folowing para...

    Text Solution

    |

  17. Wave property of electron implies that they will show diffraction effe...

    Text Solution

    |

  18. Wave property of electron implies that they will show diffraction effe...

    Text Solution

    |

  19. Wavelength of the radiation of freuquency 100 Hz is :

    Text Solution

    |

  20. Planck's constant has the dimetnsion of

    Text Solution

    |

  21. The value of Planck's constant is

    Text Solution

    |