Question

Which of the following statement(s) is(are) correct about the spectrum of hydrogen atom?

• A. The ratio of the longest wavelength to the shortest wavelength in Balmer series is $\frac{9}5$
• B. There is an overlap between the wavelength ranges of Balmer and Paschen series
• C. The wavelength of Lyman series are given by $\left(1+\frac{1}{ m ^{2}}\right) \lambda_{0}$, 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

Answer 1

Answer: (A), (D)

The ratio of the longest wavelength to the shortest wavelength in Balmer series is $\frac{9}5$

Answer 2

The correct answer is option
(A):The ratio of the longest wavelength to the shortest wavelength in Balmer series is $\frac{9}5$
(D): The wavelength ranges of Lyman and Balmer series do not overlap