Which of the following lines of Balmer series has longest wavelength?

In the hydrogen spectrum, the ratio of the longest wavelength in the Balmer series to the longest wavelength in the Paschen series is

The ratio of wavelength of a photon one present in limiting line of Balmer series and another with the longest wavelength line in the Lyman series in H atom is

The ratio of wavelength of a photon one present in limiting line of Balmer series and another with the longest wavelength line in the Lyman series in H atom is

Which of the following lines represents the wavelength of the spectrum of Balmer series?

The seond line of Balmer series has wavelength 4861 Å The wavelength o fthe first line Balmer series is

Wavelength of the first line of balmer seris is 600 nm. The wavelength of second line of the balmer series will be

Wavelength of the first line of balmer seris is 600 nm. The wavelength of second line of the balmer series will be