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प्रश्न
Name the principle on which a soundboard works.
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उत्तर
Soundboard works on the principle of multiple reflection of sound.
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संबंधित प्रश्न
Name the characteristic of sound in relation to its waveform.
Define amplitude term in relation to a wave.
State the use of echo by a bat, dolphin and fisherman.
Write the approximate value of the speed of sound in water.
A type of electromagnetic wave has a wavelength of 50 Å. Name the wave and state one use of this type of wave.
In what respect does waveforms of noise and a musical note differ. Draw diagrams to illustrate your answer.
(i) A man stands at a distance of 68 m from a cliff and fires a gun. After what time interval will he hear the echo, if the speed of sound in air is 340 ms−1?
(ii) If the man had been standing at a distance of 12 m from the cliff would he have heard a clear echo?
Explain reflection at the boundary of a rarer medium.
