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Sound — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceSound1 Mark
MCQ
If the time period of a wave increases, then its frequency will:
  • A
    Increase
  • ✓
    Decrease
  • C
    Remain the same
  • D
    First increases then decreases
✓

Answer

Correct option: B.
Decrease
$\text{f}=\frac{1}{\text{T}}$
$f \rightarrow$ frequency
$T \rightarrow$ timeperiod
Frequency is inversely proportional to the time period of the wave.
So when time period increases then the frequency will decrease.

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