The ration of minimum wavelengths of Lyman and Balmer series will be

Options

A. 5
B. 10
C. 1.25
D. 0.25

Answer

D

Explanation

Minimum wavelengh is for highest energy .
`n=1to n=00`, energy `=E_(0)`._________ `n=ooE=0`
`n=2 to noo`, energy `E_(0)//4`. ___________`n=2E_(0)//4 `___________`n=1E_(0)`
`therefore` Balmer line has 4 times the wavelength .
`therefore` Ratio of minimum wavelengths is `1//4=0.25`.