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प्रश्न
State two conditions for an echo to take place
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उत्तर
The conditions for an echo to take place are
1)The minimum distance between the source of the sound and the reflector in the air must be 17 m
2) The size of the reflector must be large enough as compared to the wavelength of the sound wave.
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संबंधित प्रश्न
The safe limit of loudness of audible sound is
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- Which of the following quality determines the loudness of a sound wave?
- wavelength
- frequency and
- amplitude
- How is loudness related to the quantity mentioned above in part (a)?
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
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.
Explain the following and illustrate your answer by drawing appropriate diagram:
Loudness
How does frequency affect a musical sound?
What is the noise? Give an example.
______ is a general term for the distinguishable characteristic of a wave.
