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Sound — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceSound4 Marks
Question
A sound producing body is at considerable distance from a man. There can be four different media W, X, Y and Z between the sound producing body and the man. The medium X brings the sound to man most quickly whereas medium Z takes the maximum time. The time taken by medium W in bringing sound to man is less than that of X but more than that of Z. The medium Y, however, fails to bring the sound from the sound producing body to the man. Which medium could be the one:
  1. Having no fixed shape and no fixed volume?
  2. Having a fixed volume but no fixed shape?
  3. Having the same composition as that on the moon?
  4. Having a fixed shape and a fixed volume?
✓

Answer

  1. Z medium has no fixed shape and no fixed volume.
  2. W medium has a fixed volume but no fixed shape.
  3. Y medium has the same composition as that on the moon.
  4. X medium has a fixed shape and a fixed volume.

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