The ratio of wavelengths of the last line of the Balmer series and the last line of the Lyman series is_____.

Question

The ratio of wavelengths of the last line of the Balmer series and the last line of the Lyman series is_____., 2, 1, 4, 0 . 5

MARKS App · Accepted Answer

For last Balmer series, 1 λ b = R 1 2 2 - 1 ∞ 2 λ b = 4 R For last Lyman series, 1 λ l = R 1 1 2 - 1 ∞ 2 λ l = 1 R λ b λ l = 4 R 1 R λ b λ l = 4 Hence this is the correct answer.

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