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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
State the safe limit of sound level in terms of decibel for human hearing.
When sound propagates in air, it does not carry energy with it.
Match the following
| column A | column B |
| (A) Amplitude | (1) frequency |
| (B) Frequency | (2) amplitude |
| (C) Loudness | (3)maximum displacement on either side |
| (D) Pitch | (4) presence of other frequencies |
| (E) Waveform | (5) 1/ time period |
How does sound travel in air?
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?
Two identical guitars are played by two persons to give notes of the same pitch. Will they differ in quality? Give a reason for your answer.
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
How can one distinguish the sounds of two musical instruments even if they are of the same pitch and same loudness?
Draw a diagram to show the waveforms of a pure note and a musical note, of the same pitch and same loudness.
