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Sonar and Radar

A ship sends ...

Question

A ship sends sonar and receives an echo after 2 seconds. If the speed of sound waves in water is 1500 m/s, then the depth of the sea is

A

1500 m

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B

500 m

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C

1000 m

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D

750 m

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Solution

The correct option is A
1500 m

Let depth of sea = d

Distance traveled = 2d

Speed of sound = total distance/ time taken

1500 m/s = 2d / 2s

d = 1500 m

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Standard IX Physics

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