The top of the ocean near a ship has warm water where sound travels at

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

Problem

The top

200\,\text{m}

of the ocean near a ship has warm water where sound travels at

1520\,\text{m/s}

. Below that, a colder layer allows sound to travel at

1480\,\text{m/s}

. A sound pulse sent straight down returns as an echo in a total time of

0.90\,\text{s}

. Assuming the pulse travels vertically, estimate the depth of the sea floor beneath the ship. (a)

720\,\text{m}

(b)

684\,\text{m}

(c)

670\,\text{m}

(d)

600\,\text{m}