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प्रश्न
State the laws of reflection of sound.
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उत्तर
he laws of reflection of sound obey the laws of reflection of light. Hence the laws of reflection of sound are:
(i) The incident sound wave, the reflected sound wave, and the normal to the point of incidence all lie in the same plane.
(ii) The angle of reflection of sound is always equal to the angle of incidence of sound.
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संबंधित प्रश्न
A man is standing at a distance of 12 m from a cliff. Will he be able to hear a clear echo of his sound? Give a reason for your answer.
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What is the minimum distance in air required from a sound reflecting surface to hear an echo (at 20°C) ?
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Numerical problems:
An echo returned in 3s. What is the distance of the reflecting surface from the source given that the speed of sound is 330 ms-1?
