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14. waves and sound — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics14. waves and sound1 Mark
MCQ
If the velocity of sound in air is $350 m/s$. Then the fundamental frequency of an open organ pipe of length $50\,cm,$ will be ............... $\mathrm{Hz}$
  • ✓
    $350$
  • B
    $175$
  • C
    $900 $
  • D
    $750$
✓

Answer

Correct option: A.
$350$
a
(a) Fundamental frequency of open pipe ${n_1} = \frac{v}{{2l}} = \frac{{350}}{{2 \times 0.5}} = 350$ $Hz$.

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