Advertisements
Advertisements
प्रश्न
Explain how the principle of echo is used by
The dolphin to locate small fish as its prey
Advertisements
उत्तर
Dolphins detect their enemies and small fishes by emitting ultrasonic waves in all directions and then hearing their reflected sound i.e. echo. Dolphins can judge the nature of obstacles or of small fish by hearing the echo and catch their prey.
APPEARS IN
संबंधित प्रश्न
State two differences between the light and sound waves.
What is a megaphone ? Name the principle on which a megaphone works.
What is a soundboard ? Explain the working of a soundboard with the help of a labelled diagram.
What do you understand by the ‘Echolocation system of Dolphins’?
Why is an echo not heard when the distance between the source of sound and reflection body is less than 10 m?
Explain reflection at the boundary of a rarer medium.
