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An electron and proton have the same de-...

An electron and proton have the same de-Broglie wavelength. Then the kinetic energy of the electron is

A

Zero

B

Less than that of a proton

C

More than that of a proton

D

Equal to that of a proton

Text Solution

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The correct Answer is:
C
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An electron and a photon have got the same de- Broglie wavelength. Prove that total energy of electron is greater than energy of photon.

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Knowledge Check

  • A photon and an electron moving with a velocity v have the same de broglie wavelength . Then the ratio of the kinetic energy of the electron to the kinetic energy of the photon is [C is the speed of light ]

    A
    a) `v/C`
    B
    b) `(2v)/(C )`
    C
    c) `(C )/(2v)`
    D
    d) `(v)/(2C)`

  • If a proton and electron have the same de Broglie wavelength, then

    A
    kinetic energy of electron `lt` kinetic energy of proton
    B
    kinetic energy of electron = kinetic energy of proton
    C
    momentum of electron = momentum of proton
    D
    momentum of electron `lt` momentum of proton

  • Find the de-Broglie wavelength of an electron with kinetic energy of 120 eV.

    A
    112 pm
    B
    95 pm
    C
    124 pm
    D
    102 pm

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    A photon and a proton have the same de-Broglie wavelength lamda . Prove that the energy of the photon is (2mlamdac//h) times the kinetic energy of the proton.

    An electron and proton have the same de-broglie wavelength. Which one of these has higher kinetic energy? Which one is moving faster?

    An electron and a photon have the same de Broglie wavelength. Which one of these has higher kinetic energy?

    A photon and electron have got same de-Broglie wavelength. Total energy of an electron is............than that of photon.

    Find the de-Broglie wavelength of an electron with kinetic energy of 120 eV.

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