The frequency of sound waves can be expressed in

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c y c l e / s e c o n d

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s^{- 1}

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all the above

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Solution

The correct option is D all the above
The frequency of a wave is the number of waves passing a point in a certain time. The SI unit of frequency is $H z$ . One Hz is equal to one cycle per second.
We also have the relation between the frequency and the time period as:
$f = \frac{1}{T}$
The time is measured in seconds. So the frequency can also be expressed as $s^{- 1}$

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9500 H z

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300 m / s

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Solve

(1) Sound wave has frequency 320 Hz and wavelength 0.25 m. How much distance will it travel in 10 second.

[Ans : 800 m.]

(2) A sound wave having certain frequency travels with a speed of 336 m/s and wavelength 3 cm. calculate the frequency. Will it be audible?

[11200 Hz, Yes.]

^{- 1}

^{- 1}

Can we hear sound waves having frequency hundred thousands Hz

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