Question

The separation between two consecutive crests in a transverse wave is 100 m. If wave velocity is 20 m s-1, find the frequency of wave.

  • Category: Propagation of Sound Waves Class 9 ICSE
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Answer

wavelength (λ) = 100 m

wave velocity (V)= 20 m s-1

Frequency (f) = ?

As we know,

Wave velocity (V) = Frequency (f) × Wavelength (λ)

⇒ 20 = f × 100

⇒ f = 20\over 100 = 0.2 Hz

Hence, f = 0.2 Hz

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