A) \[4000\,\,{AA}\]
B) \[5000\,\,{AA}\]
C) \[6000\,\,{AA}\]
D) \[5500\,\,{AA}\]
Correct Answer: A
Solution :
\[{{\lambda }_{m}}=\frac{{{\lambda }_{a}}}{\mu }=\frac{c}{\nu \mu }=\frac{3\times {{10}^{8}}}{5\times {{10}^{14}}\times 1.5}=4000\,{AA}\]
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