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प्रश्न
Decibel is the unit of pitch of a sound.
विकल्प
True
False
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उत्तर
False.
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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.
Name the characteristic of the sound affected due to a change in its
(a) amplitude (b) waveform (c) frequency.
Two waves of the same pitch have amplitudes in the ratio 1:3. What will be the ratio of frequencies?
How does the wave pattern of a loud note differ from a soft note? Draw a diagram.
Name the unit in which loudness of sound is measured.
Draw a diagram to show the wave pattern of high pitch note and a low pitch note, but of the same loudness.
Which characteristics of sound will change if there is a change in its amplitude and its waveform.
Give a scientific reason.
We can hear the movement of a mosquito’s wings but we cannot hear the movement of our hands.
What does the intensity of sound depend upon?
Give scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
