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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 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.

A

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

B

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

C

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

D

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

Text Solution

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The correct Answer is:
A
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