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Hydrogen atom from excited state comes to the ground state by emitting a photon of wavelength lamda, then what is the quantum number ofexcited states ?

Answer»

`SQRT((lamdaR-1)/(lamdaR))`
`sqrt((lamdaR)/(lamdaR-1))`
`sqrt(lamdaR(R-1))`
`lamdaR(R-1)`

Solution :`(1)/(LAMDA)R[(1)/(1^(2))-(1)/(n^(2))]`
`:.(1)/(lamdaR)=(1)/(1)-(1)/(n^(2))`
`(1)/(n^(2))=1-(1)/(lamdaR)=(lamdaR-1)/(lamdaR)`
`:.n=sqrt((lamdaR)/(lamdaR-1))`


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