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A freshwater dolphin sends untrasound so...

A freshwater dolphin sends untrasound sound to locate a prey. If the echo off the prey is received by dolphin `0.12 s` after being send, how far is the prey from the dolphin ?

Text Solution

Verified by Experts

If the distance between the prey and the dolphin is s, then `2 s = vt or s = (vt)/(2) = ((1500 xx 0.12)m)/(2) = 90 m`.
(speed of sound in water `= 1500 m//s`).
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