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

Gujarat BoardEnglish MediumSTD 11 SciencePhysics14. waves and sound1 Mark
MCQ
Frequency range of the audible sounds is
  • A
    $0 Hz -30 Hz$
  • ✓
    $20 Hz -20 kHz$
  • C
    $20 kHz -20,000 kHz$
  • D
    $20 kHz -20 MHz$
✓

Answer

Correct option: B.
$20 Hz -20 kHz$
b
(b) The human ear responds to sounds with frequencies in the range from $20 \mathrm{Hz}$ to $20000 \mathrm{Hz}$. This is called the audible range of the human ear.

Thus, the frequency range of audible sound is $20 \mathrm{H} z$ to $20000 \mathrm{Hz}$.

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