A) \[\frac{r_{A}^{2}}{R_{B}^{2}}\]
B) \[\frac{R_{B}^{2}}{R_{A}^{2}}\]
C) \[3m/{{s}^{2}}\]
D) \[-3m/{{s}^{2}}\]
Correct Answer: B
Solution :
\[\lambda =\frac{c}{v}=\frac{3\times {{10}^{8}}}{1\times {{10}^{6}}}=3\times {{10}^{2}}=300m\]
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