b
\(h\nu \,\, - \,\,h{\nu _0}\, = \,\,{K_{\max }}\,\)

\( \Rightarrow \,h({\nu _1}\, - \,\,{\nu _0})\,\, = \,\,{K_1}\,........\,\,(i)\,\,\,\,h({\nu _2}\, - \,\,{\nu _0})\,\, = \,\,{K_2}\,......\,\,(ii)\)

\( \Rightarrow \,\,\frac{{{\nu _1}\, - \,{\nu _0}}}{{{\nu _2}\, - \,\,{\nu _0}}}\,\, = \,\,\frac{{{K_1}}}{{{K_2}}}\,\, = \,\,\frac{1}{K}\,\) માટે

\({\nu _{\text{0}}}\, = \,\,\,\frac{{K{\nu _{\text{1}}}\, - \,\,{\nu _2}}}{{K\,\, - \,\,1}}\,\,.\)