Find the ratio between the wavelength of the most energetic' spectral lines in the Balmer and Paschen series of the hydrogen spectrum.

Using the Rydberg formula, calculate the wavelength of the first four spectral lines in the Balmer series of the hydrogen spectrum.

The ratio of longest wavelength line in the Balmer andaschen series of hydrogen spectrum is

Calculate the wavelength of the first and the last line in the Balmer series of the hydrogen spectrum.

Calculate the longest wave length spectral line in the Paschen series of hydrogen emission spectrum

Find the shortest and longest wavelength of spectral line in the Balmer series of the hydrogen atom.

Find the shortest wavelength of the Paschen series, given that the longest wavelength of the Balmer series in the hydrogen spectrum is 6563 A^@ .

Find wavelength of 1^(st) line of Paschen series of hydrogen spectrum.

Find wavelength of 1^(st) line of Paschen series of hydrogen spectrum.

The wavelength of the first spectral line of the Lyman series of hydrogen spectrum is

The longest wavelength in Balmer series of hydrogen spectrum will be