Answer
1.3 seconds
Explanation:
Distance between moon and earth, S=4×108m
Speed of radar signal, c=3.08×108m/s
We know,
Distance between moon and earth,
S=c×t, where t is the time taken by the radar signal to reach moon.
⇒4×108=3.08×108×tor,t=3.08×1084×108
t=1.3s
Hence it will take 1.3 seconds for the radar signal to reach from earth to moon
