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प्रश्न
State three factors on which loundess of sound heard by a listener depends.
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उत्तर
The loudness of the sound heard depends on:
(i) Loudness is proportional to the square of the amplitude.
(ii) Loudness is inversely proportional to the square of distance.
(iii)Loudness depends on the surface area of the vibrating body.
संबंधित प्रश्न
Name the factor that determines Quality of the note
Decibel is the unit of pitch of a sound.
Smaller the membrane, .................. is the pitch.
When sound travels in form of a wave
Define the following term:
Frequency
Two waves of the same pitch have amplitudes in the ratio 1 : 3 What will be the ratio of their
- loudness,
- 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
Explain the following and illustrate your answer by drawing appropriate diagram:
Quality of a musical note.
How do you account for the fact that two strings can be used to give notes of the same pitch and loudness but of different quality?
The same musical note when played on a piano and when played on a flute sounds different.
