Home
Class 11
CHEMISTRY
An electron beam energes from an acceler...

An electron beam energes from an accelerator with kinetic energy 100eV. What is its de-Broglie wavelength?
`[m = 9.1 xx 10^(-31)kg, h = 6.6 xx 10^(-34)Js, 1eV = 1.6 xx 10^(-19)J]`

Text Solution

Verified by Experts

Kinetic energy of electron `= 100eV`
`= 100 xx 1.6 xx 10^(-19) J = 1.6 xx 10^(-17)J`
we know, `lambda = (h)/(sqrt(2KE.m))`
`= (6.626 xx 10^(-34))/(sqrt(2xx 1.6 xx 10^(-17) xx 9.1 xx 10^(-31))) = 1.228 xx 10^(-10)m`
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

An electron is moving with a kinetic energy of 2.275 xx 10^(25) J . Calculate its de-Broglie wavelength. (Mass of electron = 9.1 xx 10^(-31) kg, h = 6.6 xx 10^(-34) J s)

An electron has kinetic energy 2.8 xx 10^-23 J de-Broglie wavelength will be nearly. (m_e = 9.1 xx 10^-31 kg) .

The speed of electron having de Broglie wavelength of 10 ^(10) m is ( me = 9.1 xx 10 ^(-31) kg, h = 6.63xx 10^(-34) J-s)

For what kinetic energy of a neutron will the associated de-Broglie wavelength be 1.40 xx 10^(-10)m ? Mass of neutron = 1.675 xx 10^(-27) kg, h = 6.63 xx 10^(-34) Js .

For what kinetic energy of a neutron will the associated de-Broglie wavelength be 5.6 xx 10^(-10)m ?

What is the wavelength of light . Given energy =3.03xx10^(-19)J, h=6.6xx10^(-34)JS, c=3.0xx10^(8)m//s ?

The kinetic energy of an electron is 5 eV . Calculate the de - Broglie wavelength associated with it ( h = 6.6 xx 10^(-34) Js , m_(e) = 9.1 xx 10^(-31) kg)

Calculate the de-Broglie wavelength of an electron of kinetic energy 100 eV. Given m_(e)=9.1xx10^(-31)kg, h=6.62xx10^(-34)Js .

NARAYNA-ATOMIC STRUCTURE-All Questions
  1. Calculate de Broglie wavelength of an electron travelling at 1 % of th...

    Text Solution

    |

  2. Two particles A and B are in motion. If the wavelength associated with...

    Text Solution

    |

  3. An electron beam energes from an accelerator with kinetic energy 100eV...

    Text Solution

    |

  4. The kinetic energy of an electron is 4.55 xx 10^(-25)J. Calculate the ...

    Text Solution

    |

  5. A microscope using suitable photons is employed to an electron in an...

    Text Solution

    |

  6. A golf ball has a mass of 40g and a speed of 45m//s. If the speed can ...

    Text Solution

    |

  7. An electron has a speed of 40m//s, accurate up 99.99%.What is the unce...

    Text Solution

    |

  8. what is the total number of orbitals associated with the principal qua...

    Text Solution

    |

  9. using s, p, d notations describe the orbital with the following quantu...

    Text Solution

    |

  10. One of the fundamental particles is missing in one of the isotopes of ...

    Text Solution

    |

  11. The charge of an electron is 1.6 xx 10^(-19)C what will be the value o...

    Text Solution

    |

  12. Which of the following is correct for cathode rays in discharge tube

    Text Solution

    |

  13. The specific charge for a cathode ray.

    Text Solution

    |

  14. The specific charge for positive rays is much less than the specific c...

    Text Solution

    |

  15. In s1 be the specific charge ( e//m) of cathode rays and (S2) be that...

    Text Solution

    |

  16. The massive particle among the following is

    Text Solution

    |

  17. Which of the following statements about the electron is incorrect?

    Text Solution

    |

  18. Ernest Rutherford's model of the atom didn't specifically include the

    Text Solution

    |

  19. The conclusions of Rutherford scattering experiment does not include:

    Text Solution

    |

  20. A neutral atom, with atomic number greater than one consists of

    Text Solution

    |