A) 400 m
B) 300 m
C) 350 m
D) 200 m
Correct Answer: B
Solution :
\[\lambda =\frac{c}{V}=\frac{3\times {{10}^{8}}}{1\times {{10}^{6}}}\] \[=3\times {{10}^{2}}\] \[=300\,m\]
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