Time period of a sound wave having the wavelength $0.2 m$ and frequency $10$ Hz will be

2 s

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0.2 s

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0.1 s

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0.02 s

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Solution

The correct option is C $0.1 s$
Given - $n = 10 H z$ ,
we have , time period , $T = 1 / n = 1 / 10 = 0.1 s$

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(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.]

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