Question

26. A freshwater dolphin sends ultrasonic sound to locate a prey. If the echo of the prey is received
by dolphin in 0.12s after being sent, how far is the prey from the dolphin?​

Answer 1

A freshwater dolphin sends untrasound sound to locate a prey. If the echo off the prey is received by dolphin

after being send, how far is the prey from the dolphin ?

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Answer 2

The distance covered by the prey and the dolphin is 180 meters.

Explanation:

Given that,

If the echo of the prey is received  by dolphin in 0.12 s after being sent, t = 0.12 s

The speed of sound in ultrasonic sound wave is 1500 m/s.

We need to find the distance covered by the prey and the dolphin. Let the distance covered is d. It is given by :

$d=v\times t$

$d=1500\ m/s\times 0.12\ s$

d = 180 meters

So, the distance covered by the prey and the dolphin is 180 meters. Hence, this is the required solution.

Learn more,

Speed of sound wave