A) \[2\times {{10}^{8}}m\,/s\]
B) \[3\times {{10}^{8}}m\,/s\]
C) \[1.071\times {{10}^{8}}m\,/s\]
D) \[1.28\times {{10}^{8}}m\,/s\]
E) None of these
Correct Answer: A
Solution :
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