In a hydrogen spectrum, 
be the wavelength of first transition line of Lyman series. The wavelength difference will be "a 
" between the wavelength of 3 rd transition line of Paschen series and that of 2 nd transition line of Balmer Series where a =_______
Text Solution
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(5)
For first line of Lyman
… (1)
3 rd line (Pachen)
2 nd line (Balmer)
Thus 
putting (1)
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