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प्रश्न
Give a scientific reason.
We can hear the movement of a mosquito’s wings but we cannot hear the movement of our hands.
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उत्तर
The frequency of the sound produced by the movement of a mosquito’s wings lies within the human audible range (20 Hz to 20,000 Hz), whereas the sound produced by the movement of our hands has a frequency below 20 Hz, which is inaudible to humans. Therefore, we can hear the movement of a mosquito's wings but not that of our hands.
संबंधित प्रश्न
Name the phenomenon that causes a loud sound when the stem of a vibrating tuning fork is kept pressed on the surface of a table.
Smaller the membrane, .................. is the pitch.
The safe limit of loudness of audible sound is
Define the following term:
Frequency
State three factors on which loudness of sound heard by a listener depends.
Give scientific reason for the following:
Windows sometimes rattle when the low notes of a pipe organ are sounded.
Name the factors which determine the loudness of a note.
What is the noise? Give an example.
Give scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
