Home
Class 12
PHYSICS
Calculate the de Broglie wavelength of a...

Calculate the de Broglie wavelength of a neutron of energy 0.022 eVm = `1.67 xx 10^(-27)` kg.

Text Solution

Verified by Experts

Given `mv^2=0.022eV=0.022xx1.6xx10^-19J`
`m^2v^2=2mxx0.022xx1.6xx10^-19`
`mv=sqrt(2xxmxx0.022xx1.6xx10^-19`
`lambda=lambda/(mv)=(6.62xx10^-34)/sqrt(2xx1.67xx10^-27xx0.022xx1.6xx10^-19)=1.93xx10^-10m`
Promotional Banner

Topper's Solved these Questions

  • DISPERSION OF LIGHT

    MBD PUBLICATION|Exercise QUESTION BANK|111 Videos

  • ELECTOSTATIC POTENTIAL AND CAPACITANCE

    MBD PUBLICATION|Exercise QUESTION BANK|171 Videos

Similar Questions

Explore conceptually related problems

Calculate the de-Broglie wavelength of a proton having K.E. 50eV .

Calculate the de Brogilie wavelength of a proton having kinetic energy 50 eV. (m_p = 1.67 xx 10^-27 kg. h = 6.62 xx 10^34J-s)

Calculate de Broglie wavelength of an electron having kinetic energy 120 eV.

Calculate the wavelength of a photon of energy 10 eV.

Calculate de Broglie wavelength of an electron (m = 9.1 xx 10^-31kg) moving with a velocity of 10^5 m//s .

MBD PUBLICATION-DUAL NATURE OF RADIATION AND MATTER-QUESTION BANK
  1. What is de Broglie wavelength of an electron moving with 1/(20)th of v...

    Text Solution

    |

  2. Calculate the wavelength of an electron accelerated under a p.d of 150...

    Text Solution

    |

  3. Calculate the de Broglie wavelength of a neutron of energy 0.022 eVm =...

    Text Solution

    |

  4. Calculate the energy of the neutron , if it's wavelength is 1 A^@ ?

    Text Solution

    |

  5. An electron and proton are possessing same amount of kinetic energy. W...

    Text Solution

    |

  6. Is the de Broglie wavelength of a photon of an em radiation equal to t...

    Text Solution

    |

  7. Are matter waves electro magnetic ?

    Text Solution

    |

  8. Why cannot we experience the existence of matter waves in our day life...

    Text Solution

    |

  9. What is the difference between light waves and matter waves ?

    Text Solution

    |

  10. A proton and an electron have same de Broglie wavelength, which posses...

    Text Solution

    |

  11. A photon and electron have got same de Broglie wavelength. Which has g...

    Text Solution

    |

  12. What is the dimensional formula of h/(mv) ?

    Text Solution

    |

  13. What are application of matter waves ?

    Text Solution

    |

  14. How do we define photoelectric work function and how it is related to ...

    Text Solution

    |

  15. Do all photons have same mass ? If not why ?

    Text Solution

    |

  16. Which photon is more energetic ? A red one or violet one ?

    Text Solution

    |

  17. How do you justify that the rest mass of photons is zero ?

    Text Solution

    |

  18. If the wavelength of an electromagnetic radiation is doubled, what wil...

    Text Solution

    |

  19. Why alkali metals most suited as photo-sensitive metals ?

    Text Solution

    |

  20. Two metals A and B have work functions 4e V and 10 eV respectively. Wh...

    Text Solution

    |