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प्रश्न
State the safe limit of sound level in terms of decibel for human hearing.
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उत्तर
The safe limit of sound level for human hearing is 30 decibels (30 dB).
संबंधित प्रश्न
The ratio of the amplitudes of two waves is 3 : 4. What is the ratio of their loudness?
The pitch of a stringed instrument is increased by .................. tension in string.
Two waves of the same pitch have amplitudes in the ratio 1 : 3 What will be the ratio of their
- loudness,
- pitch?
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It is observed that during march-past we hear a base drum distinctly from a distance compared to the side drums.
(i) Name the characteristics of sound associated with the above obervation.
(ii) Give a reason for the above observation.
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.
Which characteristics of sound will change if there is a change in its amplitude and its waveform.
______ is a general term for the distinguishable characteristic of a wave.
What is acoustics?
