Which of the following spectral series of the hydrogen atom lies entirely in the ultraviolet region?

If ${\lambda _{\max }}$ is $6563\,\mathring{A}$ for the Balmer series of a particular atom,then the wavelength of the second line for the Balmer series will be:

If the difference in the frequencies of the first and second lines of Lyman series of hydrogen atom is $f$,then the difference in frequencies of the first and second lines of Balmer series of hydrogen atom is

The shortest wavelength in the Balmer series of the hydrogen atom spectrum is approximately equal to (use $R_{H} = 1.097 \times 10^7 \ \text{m}^{-1}$) (in $\text{Å}$)

The ratio of minimum to maximum wavelength in the Balmer series is

Find the maximum wavelength of the Brackett series for a hydrogen atom in $\mathring A$.