A) \[3.5{{R}_{H}}\]
B) \[4{{R}_{H}}\]
C) \[8{{R}_{H}}\]
D) \[\frac{8}{9}{{R}_{H}}\]
Correct Answer: C
Solution :
[c] \[{{n}_{1}}+{{n}_{2}}=4\] ...... (i) \[{{n}_{2}}-{{n}_{1}}=2\] ...(ii) \[{{n}_{1}}=1,\,{{n}_{2}}=3\] \[\overline{v}={{R}_{H}}{{Z}^{2}}\left( \frac{1}{n_{1}^{2}}-\frac{1}{n_{2}^{2}} \right)\] \[={{R}_{H}}\times {{3}^{2}}\times \left[ \frac{1}{{{1}^{1}}}-\frac{1}{{{3}^{2}}} \right]=8{{R}_{H}}\]
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