In the spectrum of hydrogen, the ratio of the longest wavelength in the Lyman series

In the spectrum of hydrogen, the ratio of the longest wavelength in the Lyman series to the longest wavelength in the Balmer series is

Options

(a) (27/5)
(b) (5/27)
(c) (4/9)
(d) (9/4)

Correct Answer:

(5/27)

Explanation:

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