A) \[14\mu m\]
B) \[70\mu F\]
C) \[2.8\mu m\]
D) \[2.8mm\]
Correct Answer: C
Solution :
\[{{\lambda }_{{{m}_{1}}}}{{T}_{1}}={{\lambda }_{{{m}_{2}}}}{{T}_{2}}\Rightarrow {{\lambda }_{{{m}_{2}}}}=\frac{{{\lambda }_{{{m}_{1}}}}{{T}_{1}}}{{{T}_{2}}}=\frac{14\times 200}{1000}=2.8\ \mu m\]
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