A submarine sends an ultrasonic pulse straight downward into the sea and receives the…

PHYSICS · Single correct · CBSE · Physics · Sound · Sound

Problem

A submarine sends an ultrasonic pulse straight downward into the sea and receives the echo after

0.06\,\text{s}

. If the speed of sound in seawater is

1.5\,\text{km/s}

, find the depth of the sea at that point. (a)

90\ \text{m}

(b)

22.5\ \text{m}

(c)

45\ \text{m}

(d)

75\ \text{m}