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प्रश्न
How is it possible to detect the filling of a pitcher under a tap by hearing its sound at a distance?
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उत्तर
As the water level in the pitcher increases, the length of the vibrating air column above the water surface decreases, and hence the frequency of the sound produced increases i.e., the sound gets shriller.
संबंधित प्रश्न
What is an echo
How is loudness related to the amplitude of wave?
Why is the loudness of sound heard by a plucked wire increased when mounted on a sound board?
- Which of the following quality determines the loudness of a sound wave?
- wavelength
- frequency and
- amplitude
- How is loudness related to the quantity mentioned above in part (a)?
Two waves of the same pitch have amplitudes in the ratio 1:3. What will be the ratio of frequencies?
Draw a diagram to show the wave pattern of high pitch note and a low pitch note, but of the same loudness.
Name musical instrument, one in each case, which produces its notes by using the following. In each case state the method used to produce notes of different pitches and loudness.
(a) A vibrating string.
(b) A vibrating column air.
(c) Vibration of any other body.
When a gun is fired at a distance, why is it that the flash is seen almost instantaneously while the sound is heard a little later?
Give a scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
Give a scientific reason.
The sounds generated by a tabla and a sitar are different.
