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प्रश्न
Explain the following and illustrate your answer by drawing appropriate diagram:
Quality of a musical note.
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उत्तर
Quality of a musical note: quality of a sound is that characteristic which distinguishes the two sounds of the same loudness and same pitch, but emitted by two different instruments. It depends on the waveform.
Two sounds of same amplitudes (i.e same loudness) and
same frequency but of different wave forms.
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संबंधित प्रश्न
If the amplitude of vibration is large, sound is feeble.
The ratio of the amplitudes of two waves is 3 : 4. What is the ratio of their loudness?
The distance from one compression to nearest rarefaction is called wavelength.
Name the characteristic of the sound affected due to a change in its
(a) amplitude (b) waveform (c) frequency.
What determines the pitch of a sound?
Explain the following and illustrate your answer by drawing appropriate diagram:
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.
Give scientific reason for the following:
Windows sometimes rattle when the low notes of a pipe organ are sounded.
Two waves of the same pitch have their amplitudes in the ratio 2 : 3.
(i) What will be the ratio of their loudness?
(ii) What will be the ratio of their frequencies?
Give a scientific reason.
We can hear the movement of a mosquito’s wings but we cannot hear the movement of our hands.
