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The wavelength of the first balmer line caused by a transition from the `n = 3` level to the n = 2 level in hydrogen is `lamda_(1)`. The wavelength of the line caused by an electronic transition from `n =5` to `n =3` isA. `(375)/(128) lamda_(1)`B. `(125)/(64) lamda_(1)`C. `(64)/(125) lamda_(1)`D. `(128)/(378) lamda_(1)` |
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Answer» Correct Answer - B `(lamda_(1))/(lamda_(2))=((1)/(2^(2))-(1)/(3^(2)))/((1)/(3^(2))-(1)/(5^(2)))=((1)/(4)-(1)/(9))/((1)/(9)-(1)/(25))=(125)/(64)` `lamda_(2)=(125)/(64)lamda_(1)`. |
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