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प्रश्न
How are bats able to avoid obstacles in their way?
उत्तर
Bats emit the high frequencies that range between 20 KHz to 75 KHz. The echoes from these sounds help in locating the obstacles in their path and to avoid them.
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संबंधित प्रश्न
Describe with the help of a diagram, how compressions and rarefactions are produced in air near a source of sound.
Sound can travel through ______.
In which medium sound travels faster : air or iron?
State one observation from everyday life which shows that sound travels much more slow than light.
A body vibrating with a time-period of `1/256` s produces a sound wave which travels in air with a velocity of 350 m/s. Calculate the wavelength.
Give scientific reasons:
As the sound wave propagates from one place to the other in air, the air itself is not required to move from one place to the other.
A boy fires a gun and another boy at a distance hears the sound of fire 2.5s after seeing the flash. If the speed of sound in air 340 m/s, find distance between the boys.
The propagation of sound does not occur through a ______.
Do all animals have same ranges of audible frequencies?
The amount of water vapour present in the air is known as ______.
