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10. If a target is 5 miles away, how long does it take for the RADAR echo to be received back at the antenna?
The radar echo return time is calculated by dividing the round-trip distance by the speed of light. A target 5 nautical miles away results in a total distance of 10 nautical miles for the radar pulse. This distance, divided by the speed of light, yields a return time of approximately 61.7 microseconds.
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