If the series limit frequency of the Lyman series is `nu_L`, then the series limit frequency of the Pfund series is

Options

A. `25 v_L`
B. `16v_L`
C. `v_L //16`
D. `v_L //25`

Answer

D

Explanation

`hv_L = E_(oo) - E_1`
` hv _f = E_oo - E_5 `
` E prop = (z^2)/( n^2) implies (E_5)/(E_1)=((1)/(5))^2 =(1)/(25)`
Eqn `(I ) //(ii ) implies (hv_L)/(hv_F) = (E_1)/(E_5) implies (v_L )/(v_F) =(25 )/( I) implies v_F =(v_L )/(25)`