Which of the following statement(s) is (are) correct about the spectrum of hydrogen atom ?
Select ALL correct options:
A
The ratio of the longest wavelength to the shortest wavelength in Balmer series is $9 / 5$
B
There is an overlap between the wavelength ranges of Balmer and Paschen series.
C
The wavelengths of Lyman series are given by $\left(1+\frac{1}{\mathrm{~m}^2}\right) \lambda_0$, where $\lambda_0$ is the shortest wavelength of Lyman series and $m$ is an integer
D
The wavelength ranges of Lyman and Balmer series do not overlap
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