The wavelength of a sound wave is 3 cm and speed of sound is 340 $m s^{- 1}$ . Will it be audible? [2 MARKS]

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Solution

Formula : 1 Mark
Result : 1 Mark

$S p e e d = w a v e l e n g t h \times f r e q u e n c y$

$340 = 0.3 \times F r e q u e n c y$

$∴$ Frequency = $\frac{340}{0.3}$ = 1133.33 Hz.

It will be audible because frequency range of a human ear is 20 Hz to 20000 Hz.

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