$\frac{{hc}}{{{\lambda _3}}} = \frac{{hc}}{{{\lambda _2}}} + \frac{{hc}}{{{\lambda _1}}}\,\,\, \Rightarrow \,\,\,\frac{1}{{{\lambda _3}}} = \frac{1}{{{\lambda _2}}} + \frac{1}{{{\lambda _1}}}\,\,\, \Rightarrow \,\,\,{{\text{v}}_{\text{3}}} = {v_2} + {v_1}$
$(1)$ $n = 1,\,l = 0,\,m = 0$
$(2)$ $n = 2,\,l = 0,\,m = 0$
$(3)$ $n = 2,\,l = 1,\,m = 1$
$(4)$ $n = 3,\,l = 2,\,m = 0$
$(5)$ $n = 3,\,l = 2,\,m = 0$
($\lambda$ એ ઇલેક્ટ્રોનના તરંગ સાથે સંકળાયેલી તરંગલંબાઈ છે)