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A hydrogen atom moving at speed v collid...

A hydrogen atom moving at speed `v` collides with another hydrogen atom kept at rest .Find the minimum value of `v` for which one of the atoms may get ionized, the mass of a hydrogen atom `= 1.67 xx 10^(-27)kg`

A

`7.2xx10^(4)ms^(-1)`

B

`2.3xx10^(4)ms^(-1)`

C

`2.3xx10^(5)ms^(-1)`

D

`7.2xx10^(5)ms^(-1)`

Text Solution

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The correct Answer is:
A
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Mass of one hydrogen atom

Knowledge Check

  • The mass of 1 atom of hydrogen is

    A
    1g
    B
    0.5 g
    C
    `1.6xx10^(-24)g`
    D
    `3.2xx10^(-24)g`

  • A H-atom moving with speed v makes a head on collision with a H-atom in rest. Both atoms are in ground state. Find the minimum value of velocity v for which one of atom may excite.

    A
    `6.25times10^(4)m//s`
    B
    `8times10^(4)m//s`
    C
    `7.25times10^(4)m//s`
    D
    `13.6times10^(4)m//s`

  • Find the minimum frequency of light which can ionise a hydrogen atom.

    A
    `3.28times10^(15)Hz`
    B
    `5times10^(15)Hz`
    C
    `91.1 Hz`
    D
    None of these

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    When a photon is emited by a hydrogen atom , the photon carries a momentum with it (a) calculate the momentum carreied by the photon when a hydrogen atom emits light of wavelength 656.3 nm (b) with what speed does the atoms recoil during this transition? Take the mass of the hydrogen atom = 1.67 xx 10^(-27) kg (c ) Find the kinetic energy of recoil of the atom

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