In hydrogen atom spectrum, A. the maximum wavelength of the radiation of Lyman series is [2026]

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Solution

Q.
In hydrogen atom spectrum, $(R \to Rydberg's constant)$

A. the maximum wavelength of the radiation of Lyman series is $\frac{4}{3 R}$
B. the Balmer series lies in the visible region of the spectrum
C. the minimum wavelength of the radiation of Paschen series is $\frac{9}{R}$
D. the minimum wavelength of Lyman series is $\frac{5}{4 R}$

Choose the correct answer from the options given below: [2026]

1 A, B Only

2 A, B and C Only

3 A, B and D Only

4 B, D Only

Ans.
(2)

$\frac{1}{λ} = R (1 - \frac{1}{4})$

$λ = \frac{4}{3 R}$

$\frac{1}{λ'} = R (\frac{1}{9})$

$λ' = \frac{9}{R}$

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