Calculate the wavelength of an electron mass 9.1*10^-31kg moving with a velocity of 2.0*10^6m/s (h=6.63*10^-34Js) (Hint: De Broglie’s wavel

Question

Calculate the wavelength of an electron mass 9.1*10^-31kg moving with a velocity of 2.0*10^6m/s (h=6.63*10^-34Js) (Hint: De Broglie’s wavelength)

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Ngọc Khuê 2 months 2021-09-01T07:30:44+00:00 1 Answers 0 views 0

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    2021-09-01T07:32:03+00:00

    Answer:

    Wavelength, \lambda=3.64\times 10^{-10}\ m

    Explanation:

    We have,

    Velocity an electron is 2\times 10^6\ m/s

    Mass of an electron is 9.1\times 10^{-31}\ kg

    It is required to find the wavelength of electron. The De-Broglie wavelength of an electron is given by :

    \lambda=\dfrac{h}{mv}

    h is Planck’s constant

    \lambda=\dfrac{6.63\times 10^{-34}}{9.1\times 10^{-31}\times 2\times 10^6}\\\\\lambda=3.64\times 10^{-10}\ m

    So, the wavelength of an electron is 3.64\times 10^{-10}\ m.

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