Ultrasonic waves are sent in the sea from a sonar device attached to a ship. These waves take 0.6s to travel from the ship to the bottom of the sea and back to the ship in the form of an echo. What is the depth of the sea? (Speed of sound in water = 1500m/s)

450 m

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900 m

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300 m

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600

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Solution

The correct option is A 450 m
Time taken to travel back and forth=0.6 sec
Time taken to reach the surface=0.3 sec
$d = v \times t = 1500 \times 0.3 = 450 m$

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Ultrasonic waves are sent in the sea from a sonar device attached to a ship. These waves take 0.6s to travel from the ship to the bottom of the sea and back to the ship in the form of an echo. What is the depth of the sea? (Speed of sound in water = 1500m/s)

The correct option is A 450 mTime taken to travel back and forth=0.6 secTime taken to reach the surface=0.3 secd=v×t=1500×0.3=450m

The correct option is A 450 m
Time taken to travel back and forth=0.6 sec
Time taken to reach the surface=0.3 sec
$d = v \times t = 1500 \times 0.3 = 450 m$