a radar sends a signal to an aeroplane at a distance 300km away. with a speed of 3*10^8 m/s . after how much time is the signal received back after refecting from the aeroplane.
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v=2d/t
3×10^8m/s=2×300/t
t=3×100×2/3×10^8
t=2×10^-6m/s
Hope it helps u❤
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