# The ratio of the shortest wavelength of two spectral series of hydrogen spectrum is found to be about 9

Question:

The ratio of the shortest wavelength of two spectral series of hydrogen spectrum is found to be about 9 . The spectral series are:

1. Paschen and P fund

2. Lyman and Paschen

3. Brackett and Piund

4. Balmer and Brackett

Correct Option: , 2

Solution: