A) 1: 2
B) 4 : 1
C) 2 : 1
D) 1 : 4
Correct Answer: C
Solution :
\[{{W}_{0}}\propto \frac{1}{\lambda }\Rightarrow \frac{{{\lambda }_{1}}}{{{\lambda }_{2}}}=\frac{{{({{W}_{0}})}_{2}}}{{{({{W}_{0}})}_{1}}}=\frac{4.5}{2.3}=\frac{2}{1}\].
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