Total no of lines in Lyman series of H spectrum will be-
(where n=no. of orbits)

The Lyman series of hydrogen spectrum lies in the region :

The Lyman series of hydrogen spectrum lies in the region :

The ratio of the wave lengths of the first line in the Lyman series of the spectrum of Hydrogen atom and the first line in the Balmer series of the spectrum of He^(+) is

The ratio of the wave lengths of the first line in the Lyman series of the spectrum of Hydrogen atom and the first line in the Balmer series of the spectrum of He^(+) is

The ratio of the wave lengths of the first line in the Lyman series of the spectrum of Hydorgen atom and the first line in the Balmer series of the spectrum of He^(+) is