Which of the following is true for the number of spectral lines when going from the Lyman series to the Pfund series?

The shortest wavelength in the Lyman series is $912 \ \text{Å}$. Then, the longest wavelength in the series must be (in $\text{Å}$)

The spectral series of the hydrogen spectrum that lies in the ultraviolet region is the

Let the series limit for the Balmer series be $\lambda_{1}$ and the longest wavelength for the Brackett series be $\lambda_{2}$. Then $\lambda_{1}$ and $\lambda_{2}$ are related as:

If $\lambda_1$ and $\lambda_2$ are the wavelengths of the first line of the Lyman and Paschen series respectively,then $\lambda_2 : \lambda_1$ is

In hydrogen spectrum,which of the following spectral series lies in the ultraviolet region?