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A H-atom moving with speed v makes a hea...

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

`6.25xx10^(4)ms^(-1)`

B

`8xx10^(4)ms^(-1)`

C

`7.25xx10^(4)ms^(-1)`

D

`13.6xx10^(4)ms^(-1)`

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The correct Answer is:
A
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A H-atom moving with speed v makes a head on collisioon with a H-atom at rest . Both atoms are in ground state. The minimum value of velocity v for which one of the atom may excite is (1.25 nxx10^(4)) m/s Find value of x.

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Knowledge Check

  • A neutron moving with speed v makes a head on collision with a hydrogen atom in ground state kept at rest. The minimum kinetic energy of the neutron for which inelastic collision takes place is

    A
    10.2 eV
    B
    20.4 eV
    C
    12.1 eV
    D
    16.8 eV

  • An hydrogen atom moves with a velocity u and makes a head on inelastic collision with another stationary H-atom. Both atoms are in ground state before collision. The minimum value of u if one of them is to be given a minimum excitation energy is

    A
    `2.64xx10^(4)ms^(-1)`
    B
    `6.24xx10^(4)ms^(-1)`
    C
    `2.02xx10^(6)ms^(-1)`
    D
    `6.24xx10^(8)ms^(-1)`

  • A neutron moving with a speed , v makes a head on collosion with a hydrogen atom in atom in ground state which is at rest. Choose the correct options (s) of the following (assume mass of neutron is nearly equal to the mass of hydrogen atom) .

    A
    For the collision to the inelastic, the minimum value of kinetic energy of neutron before collision is `10.2eV`
    B
    For the collision to the elastic , the minimum value of initila kinetic energy of the neutron before collision is `10.2eV`
    C
    for any value of initial kinetic energy of neutron the collision may be elastic .
    D
    If initial Kinetic energy of neutron before collision is `27.2eV`, the collision may be elastic or inelastic or prefectly inelastic

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    A moving hydrogen atom makes a head on collision with a stationary hydrogen atom. Befor collision both atoms are in in ground state and after collision they move together. What is the minimum value of the kinetic energy of the moving hydrogen atom, such that one of the atoms reaches one of the excited state?

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