Home
Class 12
PHYSICS
What is the momentum of electron beam of...

What is the momentum of electron beam of wavelength 4Å? `(h=6.62xx10^(-34)Js)`

Text Solution

Verified by Experts

`p=h/lambda=(6.62xx10^(-34))/(4xx10^(-10))=1.65xx10^(-24)kgms^-1`.
Promotional Banner

Topper's Solved these Questions

  • DUAL NATURE OF RADIATION AND MATTER

    PRADEEP|Exercise NCERT Exerciese question|1 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    PRADEEP|Exercise Short answer|1 Videos

  • CURRENT ELECTRICITY

    PRADEEP|Exercise Problems for Practice (B)|2 Videos

  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    PRADEEP|Exercise Multiple Choice Questions|1 Videos

Similar Questions

Explore conceptually related problems

The energy of a photon of wavelength 4000 Å is (use h=6.66xx10^(-34) J-s)

Find the energy fo photon in watt-hour for electromagentic waves of wavelength 3000 Å. Given h=6.6 xx 10^(-34) "Js".

The number of photons emitted per second by a 60 W source of monochromatic light of wavelength 663 nm is: (h=6.63xx10^(-34)Js )

Calculate the energy of an electron having de-Broglie wavelength 5500Å. Given, h=6.62xx10^(-34)Js, m_(e)=9.1xx10^(-31)kg .

Find the photon energy for electromagnetic waves of wavelength 20m. Given h= 6.63xx10^(-34) "Js".

Find the number of emitted per minute by a 25W source of monochromatic light of wavelength 5000Å. Use h=6.63xx10^(-34)Js .

If the linear momentum of a particle is 2.2xx10^(4)kg-ms^(-1) , then what will be its de-broglie wavelength? (Take, h=6.6xx10^(-34) J-s)

The energy of an excited hydrogen atom is -0.85 eV . Find the angular momentum of the electron. (h = 6.63 xx 10^(-34) J.s., pi = 3.142, E_(1) = -13.6 eV)

PRADEEP-DUAL NATURE OF RADIATION AND MATTER-Exercise
  1. What is the momentum of electron beam of wavelength 4Å? (h=6.62xx10^(-...

    Text Solution

    |

  2. The photoelectric effect can be explained on the basis of

    Text Solution

    |

  3. Which of the following has minimum stopping potential?

    Text Solution

    |

  4. When radiation is incident on a photoelectron emitter, the potential i...

    Text Solution

    |

  5. Two photons, each of energy 2.5 eV are simultaneously incident on the ...

    Text Solution

    |

  6. The maximum velocity of an electron emitted by light of wavelength lam...

    Text Solution

    |

  7. The photoelectric work function for a metal surface is 4.125 eV. The c...

    Text Solution

    |

  8. The slope of frequency of incident light and stopping potential for a ...

    Text Solution

    |

  9. Threshold wavelength for a metal having work function w(0) is lambda. ...

    Text Solution

    |

  10. The work function for metals A , B and C are respectively 1.92 eV , 2....

    Text Solution

    |

  11. The wavelength of the matter wave is independent of

    Text Solution

    |

  12. If E(1), E(2), E(3), E(4) are the respective kinetic energies of elect...

    Text Solution

    |

  13. What is de-Broglie wavelength assciated with electron moving under a ...

    Text Solution

    |

  14. The minimum energy required by an electron to..........form the metal ...

    Text Solution

    |

  15. The maximum kinetic energy of emitted photoelectrons depends on the......

    Text Solution

    |

  16. The ratio of number of photoelectrons ejected to the number of the pho...

    Text Solution

    |

  17. For given photosenstive material, the photoelectric current is...........

    Text Solution

    |

  18. An increase in the frequency of the incident light.............the vel...

    Text Solution

    |

  19. The minimum energy required to ejected an electron from the surface of...

    Text Solution

    |

  20. In photoelectric effect the energy of the free electron does not depen...

    Text Solution

    |

  21. Photon is not a..........but it is a.......... .

    Text Solution

    |