Home
Class 12
PHYSICS
Obtain the de-Broglie wavelength of a ne...

Obtain the de-Broglie wavelength of a neutron of kinetic energy 150 eV. As you have seen in Q.NO.11.31, an electron beam of this energy is suitable for crystal diffraction experiments. Would a neutron beam of the same energy be equally suitable? Explain `(m_n=1.675xx10^-27)`.

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

Obtain de-Broglie waveelngth of an electon of kinetic energy 150 eV.Given mass of electron, m=9.1 xx 10^(-31) kg ,charge on electron, e=1.6 xx 10^(-19) C and Planck's constant , h=6.62 xx 10^(-34) J s .

Determine the de-Broglie wavelength of a proton, whose kinetic energy is equal to the rest mass energy of an electron. Given that the mass of an electron is 9.1 xx 10^(-31) kg and the mass of a proton is 1,837 times as that of the electron.

Obtain the de-Broglie wavelength associated with thermal neutrons at room temperature (27^@C) . Hence explain why a fast neutron beam needs to be thermalized with the environment before it can be used for neutron diffraction experiments.

The de-Broglie wavelength of a photon is the same as the wavelength of electron, show that kinetic energy of photon is (2mclambda)/h times the kinetic energy of electron, where m is the mass of electron and c is the velocity of light.

Find the wavelength for a beam of neutrons,whose kinetic energy is 100 eV.Given that mass of neutron = 1.676 xx 10^(-24) g and h= 6.62 xx 10^(-27) erg s. .

Calculate the de-Broglie waveelngth of an electron of energy 400 eV.Given,lanck's constant = 6.6 xx 10^(-34) J s, mass of electron = 9.1 xx 10^(31) kg,1 eV = 1.6 xx 10^(-19) J .

For what kinetic energy of a neutron will the associated de-Broglie wavelength be 1.40 xx 10^-10m ?

MODERN PUBLICATION-UNIT TEST -07-EXERCISE
  1. Obtain the de-Broglie wavelength of a neutron of kinetic energy 150 eV...

    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

    |