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प्रश्न
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उत्तर
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संबंधित प्रश्न
State the safe limit of sound level in terms of decibel for human hearing.
State one important property of waves used for echo depth sounding.
Standing at a distance, how is it possible to detect the filling of bucket under a water tap by hearing the sound?
Figure shows two jars A and B containing water up to different heights. Which will produce sound of higher pitch when air is blown on them?
Name three characteristics of a musical sound.
Give scientific reason for the following:
Windows sometimes rattle when the low notes of a pipe organ are sounded.
Name one main factor on which each character such as intensity, pitch, and quality of musical sound depends.
Give a scientific reason.
We can hear the movement of a mosquito’s wings but we cannot hear the movement of our hands.
What is acoustics?
Give scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
