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Sound — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceSound2 Marks
Question
Answer the following:
At any instant a compression is formed at a point. After how much time:
  1. A rarefaction
  2. A compression will be formed at the same point?
✓

Answer

If T is the period of the wave, then
  1. After time interval $\frac{\text{T}}{2}$, the point will have a rarefaction
  2. After time T, the point will have a compression.

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