A) \[{{\lambda }_{3}}={{\lambda }_{1}}+{{\lambda }_{2}}\]
B) \[{{\lambda }_{3}}=\frac{{{\lambda }_{1}}{{\lambda }_{2}}}{{{\lambda }_{1}}+{{\lambda }_{2}}}\]
C) \[{{\lambda }_{1}}+{{\lambda }_{2}}+{{\lambda }_{3}}=0\]
D) \[\lambda _{3}^{2}=\lambda _{1}^{2}+\lambda _{2}^{2}\]
Correct Answer: B
Solution :
From the energy level diagram as shown below: \[\frac{1}{{{\lambda }_{3}}}=\frac{1}{{{\lambda }_{1}}}+\frac{1}{{{\lambda }_{2}}}\] \[=\frac{{{\lambda }_{2}}+{{\lambda }_{1}}}{{{\lambda }_{1}}{{\lambda }_{2}}}\] \[\Rightarrow {{\lambda }_{3}}=\frac{{{\lambda }_{1}}{{\lambda }_{2}}}{{{\lambda }_{1}}+{{\lambda }_{2}}}\]You need to login to perform this action.
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