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Question

A sonar device fitted in a submarine receives an echo 4s later the signal is transmitted towards another submarine 3060m away. Find the speed of sound in water.

A
1530ms1
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B
1342ms1
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C
1600ms1
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D
1250ms1
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Solution

The correct option is B 1530ms1

Distance between two submarines, s=3060m

Time taken by signal to go from sonar to another submarine, t=42s=2s

velocity of sound in water =st=30602ms1=1530ms1


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