A) \[\sqrt{\lambda \operatorname{R}\left( \lambda \operatorname{R}-1 \right)}\]
B) \[\sqrt{\frac{\lambda \operatorname{R}-1}{\lambda \operatorname{R}}}\]
C) \[\sqrt{\frac{\lambda \operatorname{R}}{\lambda \operatorname{R}-1}}\]
D) \[\sqrt{\lambda \left( \operatorname{R}-1 \right)}\]
Correct Answer: C
Solution :
\[\frac{1}{\lambda }=\operatorname{R}\left[ 1-\frac{1}{{{n}^{2}}} \right]\] \[\frac{1}{\lambda \operatorname{R}}=1-\frac{1}{{{n}^{2}}}\] \[\frac{1}{{{n}^{2}}}=1-\frac{1}{\lambda \operatorname{R}}\] \[{{n}^{2}}=\frac{\lambda \operatorname{R}}{\lambda \operatorname{R}-1}\] \[{{n}^{2}}=\sqrt{\frac{\lambda \operatorname{R}}{\lambda \operatorname{R}-1}}\]
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