with the help of Rydberg formula find the wavelength of first line of – InterviewSolution

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1.	with the help of Rydberg formula find the wavelength of first line of Pfund series .
Answer» `1/lambda=R(1/n_f^2- 1/n_i^2)` For first line of Pfund series, `n_i`=6 and `n_f`=5 `therefore 1/lambda=R(1/5^2-1/6^2)` `rArr lambda=900/"11R"`

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