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प्रश्न
What are the requisites of the medium for the propagation of sound? Briefly, explain them.
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उत्तर
The following are the requisites of medium to travel:
(i) The medium should possess elasticity so that particles of the medium have the tendency to come back to their original position after the displacement.
(ii) The medium should be frictionless so that there should be a loss of energy.
(iii) The medium must possess inertia so that particles of the medium have the ability to store energy.
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संबंधित प्रश्न
Cite an experiment to show that sound needs a material medium for its propagation.
Sound cannot travel in vacuum.
Select the correct alternative :
Sound cannot travel in
In which medium sound travels faster : air or hydrogen?
The frequency of the sound emitted by the loudspeaker is 1020 Hz. Calculate the wavelength of the sound wave in air in cm where its velocity is 340 m/s.
An electric bell is suspended by thin wires in a glass vessel and set ringing. Describe and explain what happens if the air is gradually pumped out of the glass vessel.
Define the terms 'frequency', 'wavelength' and 'velocity' of a sound wave. What is the relation between them?
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.
Complete the following sentences :
When sound travels in a medium, the particles of medium ___________ but the disturbance ___________.
How are bats able to avoid obstacles in their way?
