A sonar pulse takes 0.2 s to return from a seabed. If sound travels at 1500 m/s in water, find the depth.
Q1. A sonar pulse takes 0.2 s to return from a seabed. If sound travels at 1500 m/s in water, find the depth.
Answer: 150 m
Explanation: Distance = (speed × time)/2. Option B ignores the round trip.