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Question

A sonar echo takes 4.4s to return from a submarine. If the speed of sound in water is 1500ms1, then the distance of submarine from the sonar is:

A
1500m
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B
3000m
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C
3300m
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D
3600m
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Solution

The correct option is C 3300m
t=44s,v=1500m/s
Using d=vt2=1500×4.42=3300m

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