A) \[2:3\]
B) \[9:4\]
C) \[3:2\]
D) \[1:2\]
Correct Answer: A
Solution :
\[{{E}_{1}}:{{E}_{2}}=\frac{hc}{{{\lambda }_{1}}}:\frac{hc}{{{\lambda }_{2}}}=\frac{1}{{{\lambda }_{1}}}:\frac{1}{{{\lambda }_{2}}}\] \[3:2=\frac{1}{{{\lambda }_{1}}}:\frac{1}{{{\lambda }_{2}}}=\frac{{{\lambda }_{2}}:{{\lambda }_{1}}}{{{\lambda }_{1}}{{\lambda }_{2}}}\] \[\therefore \] \[{{\lambda }_{2}}:{{\lambda }_{1}}=3:2\] or \[{{\lambda }_{1}}:{{\lambda }_{2}}=2:3\]
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