Multiple choice

What is the speed of sound in vaccum at room tempertaure?

  1. 330 m/s

  2. 100 m/s

  3. zero

  4. infinity
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Sound is a mechanical wave that requires a material medium (particles) to propagate. In a vacuum, there are no particles to compress and rarefy, so sound cannot travel at all. The speed of sound in vacuum is therefore zero.

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