A sonar device on a submarine sends out a signal and receives an echo 5s later. What is the speed of sound in water if the distance of the object from the submarine is 3000 m?

A sonar device on a submarine sends out a signal and receives an echo 5s later. What is the speed of sound in water if the distance of the object from the submarine is 3000 m? Correct Answer 1200 m/s

Time is taken between transmission and reception of signal = 5 sec

The distance of the object from the submarine = 3000 m

Distance traveled by the ultrasound = 3000 × 2

= 6000 m

Speed of sound in water = Distance traveled/Time taken

= 6000/5

= 1200 m/sec

Bissoy MCQ

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