A) \[5\times {{10}^{-4}}s\]
B) \[4.5\times {{10}^{-3}}s\]
C) \[5\times {{10}^{-8}}s\]
D) \[4.5\times {{10}^{-6}}s\]
Correct Answer: A
Solution :
Radio signal travels with the speed of light The time taken is\[t=\frac{150\times {{10}^{3}}}{3\times {{10}^{8}}}=5\times {{10}^{-4}}s\]
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