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What accelerating potential is needed to...

What accelerating potential is needed to produce an electron beam with an effective wavelength of 0.090Å-

A

`1.86xx10^(4)eV`

B

`1.86xx10^(2)eV`

C

`2.86xx10^(4)eV`

D

`2.86xx10^(2)eV`

Text Solution

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Knowledge Check

  • The potential difference V required for accelerating an electron to have de Broglie wavelength of 1 Å is

    A
    100 V
    B
    125 V
    C
    150 V
    D
    200 V

  • An electron is accelerated by a photential difference V and as a result, its de Broglie wavelength beocmes lamda . If the applied potential difference was 2V, the de Broglie wavelength would have been

    A
    `2 lamda`
    B
    `sqrt2 lamda`
    C
    `(lamda)/(sqrt2)`
    D
    `(lamda)/(2)`