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The sound from a source travelled to the bottom of the sea and the echo was hear...


Question

The sound from a source travelled to the bottom of the sea and the echo was heard 4s later. If the speed of sound in sea water is 1500ms-1 the depth of the sea is

Options

A) 6000m

B) 3000m

C) 1500m

D) 375m


The correct answer is B.

Explanation:

t = 4s ; v = 150ms-1

depth = X ; but 2X = vt

X = \(\frac {vt}{2}\) = \(\frac {1500 \times 4}{2}\)

X = 3000m


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