Question

For sound to travel through medium, it need not :
(a) be rigid
(b) be elastic
(c) possess inertia
(d) be frictionless

  • Propagation of Sound Waves Class 9 ICSE
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Answer

(a) be rigid

Reason — A material medium is necessary for the propagation of sound from one place to another.

Requisites of the medium are :

  1. The medium must be elastic.
  2. The medium must have inertia.
  3. The medium must be frictionless.

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