A pulse of a sound is transmitted from a ship and the reflection from the sea bed is recorded after 0.2s. Calculate the depth of the sea. [Take speed of sound in sea water = 1560m/s]

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A. 312.0m
B. 156.0m
C. 78.0m
D. 31.2m

Correct Answer: Option B

B. 156.0m

Explanation

x = vt/2 = (1560×0.2)/2

=156m

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