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प्रश्न
What is echolocation? How do animals make use of this phenomenon?
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उत्तर
Echolocation is defined as sending out sounds to judge the location, size, and motion of objects from the returning echoes. The animals use this phenomenon to locate the obstacles in their path and avoid them so it helps them in navigation and to locate their prey.
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संबंधित प्रश्न
Distinguish between loudness and intensity of sound.
State the factors on which the pitch of a sound depends.
A musician recognizes the musical instrument by hearing the sound produced by it, even without seeing the instrument. Which characteristic of sound makes this possible ?
Name the type of waves produced when a tuning fork is struck in air.
In an experiment, Anhad studies sound waves. He sets up a loudspeaker to produce sound as shown below :
Anhad adjusts the signal to the loudspeaker to give a sound of frequency 200 Hz.
(a) What happens to the air in-between Anhad and the loudspeaker ?
(b) Explain how Anhad receives sound in both ears.
We can distinguish between the musical sounds produced by different singers on the basis of the characteristic of sound called :
The sound of an explosion on the surface of a lake is heard by a boat man 100 m away and by a diver 100 m below the point of explosion.
(i) Who would hear the sound first: boatman or diver?
(ii) Give a reason for your answer in part (i).
(iii) If sound takes time t to reach the boatman, how much time approximately does it take to reach the diver?
Can we produce sound in vacuum?
Explain how the principle of echo is used by
The dolphin to locate small fish as its prey.
What types of medium are required for sound to travel?
