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प्र: Sound waves cannot travel in

  • 1
    Vacuum
  • 2
    Water
  • 3
    Glass
  • 4
    Hydrogen gas
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उत्तर : 1. "Vacuum"
व्याख्या :

Answer: A) Vacuum Explanation: A Sound wave needs a medium for propogation. Hence, Sound cannot travel through a vacuum. A vacuum is an area without any air, like space. So sound cannot travel through space because there is no matter for the vibrations to work in.

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