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Two H-atoms is the ground state collide inelastically. The maximum amount by which their combined kinetic energy is reduced is

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10.2 ev

27.2 ev

20.4 ev

13.6 ev

answer is D.

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Detailed Solution

The maximum loss in KE of both hydrogen atoms will go in exciting the electrons to highest energy levels.

The maximum energy which can be absorbed to electron in ground state to reach infinity is 13.6eV. For both hydrogen atoms total absorption of energy will be (13.6+13.6=27.2eV).

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