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प्रश्न
The ratio of the amplitudes of two waves is 3 : 4. What is the ratio of their loudness?
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उत्तर
Let a1 and a2 be the amplitudes and I1 and I2 be the intensities of the two waves.
`:. I_1/I_2 = a_1^2/a_2^2 = 3^2/4^2`
`:. I_1/I_2 = 9/16`
संबंधित प्रश्न
Shrillness of a sound is determined by the ______ of vibration.
The frequency is measured in second.
The quality of a sound depends on the amplitude of wave.
Name the unit in which the loudness of sound is expressed.
Figure shows four waves A, B, C, and D
Name the wave which shows
(a) a note from a musical instrument,
(b) a soft note
(c) a shrill note.
Name three characteristics of a musical sound.
The frequencies of notes given by flute, guitar and trumpet are respectively 400 Hz, 200 Hz and 500 Hz. Which one of these has the highest pitch?
Two waves of the same pitch have amplitudes in the ratio 1 : 3. What will be the ratio of their :
(i) intensities and
(ii) frequencies
Name the factors which determine the quality of a note.
Draw a diagram to show the waveforms of a pure note and a musical note, of the same pitch and same loudness.
