InterviewSolution
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InterviewSolution
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In hydrogen atom, electron makes transition from `n = 4` to `n = 1` level. Recoil momentum of the `H` atom will beA. `13.6xx10^(-19) kg ms^(-1)`B. `6.8xx10^(-27) kg ms^(-1)`C. `12.75xx10^(-24) kg ms^(-1)`D. None of these |
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Answer» Correct Answer - B `DeltaE_((4-1))=(13.6-(13.6)/(16))eV=12.75 eV` Momentum of hydrogen atom = Momentum of photon `" " =(E)/(c)=(12.75xx1.6xx10^(-19))/(3.0xx10^(8))=6.8xx100^(-27) kg ms^(-1)` |
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