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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.
उत्तर
The frequency of the sound produced by the movement of mosquitoes' wings is in the audible range of humans, whereas that produced by the movement of our hands falls in the inaudible range. Due to this reason, we can hear the movement of a mosquito's wings but cannot hear the movement of our hands.
संबंधित प्रश्न
A pendulum oscillates 40 times in 4 seconds. Find its time period and frequency.
Name the factor that determines Loudness of the sound heard.
Name the factor that determines Pitch of the note.
In which units is the loudness of sound measured?
- 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)?
If the amplitude of a wave is doubled, what will be the effect on its loudness?
How does frequency affect a musical sound?
Which characteristics of sound will change if there is a change in its amplitude and its waveform.
Three musical instruments give out notes at the frequencies listed below. Flute: 400 Hz; Guitar: 200 Hz; Trumpet: 500 Hz. Which one of these has the highest pitch?
The diagram below shows three ways in which the string of an instrument can vibrate.
(i) Which of the above diagrams shows the fundamental note?
(ii) Which has the frequency 4 times that of the fundamental?
(iii) State the ratio between the frequency of the first and second.
