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प्रश्न
Can we hear sounds of frequencies:
Less than 20 Hz
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उत्तर
Less than 20Hz - we cannot hear the sound.
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संबंधित प्रश्न
Name the type of waves which are used by astronauts to communicate with one another on moon (or in outer space).
Out of solids, liquids and gases :
(a) in which medium sound travels slowest?
(b) in which medium sound travels fastest?
In which medium sound travels faster : air or hydrogen?
Fill in the blank and explain.
Sound does not travel through ______.
Describe in brief, with the aid of a lebelled diagram, an experiment to demonstrate that a material medium is necessary for propagation of sound.
Answer the following question :
How does the speed of sound differ in different media?
How long will sound take to travel in (a) and iron rail and (b) air, both 3.3 km in length? Take speed of sound in air to be 330 m/s and in iron to be 5280 m/s.
Does the speed of sound in a gas depend on the pressure of the gas?
What are the requisites of the medium for the propagation of sound? Briefly, explain them.
Explain the effect of density on the speed of sound.
