Question

A sound wave travels at a speed of 340m/s. If its wavelength is 2 cm, what is the frequency of the wave? Will it be in the audible range?​

Answer 1

Answer:

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Explanation:

It is given that,

Velocity of sound, v = 340 m/s

Wavelength, λ = 1.4 m

Frequency, ν =?

We know that, speed = wavelength × frequency

⟹ 340 = 1.4 x ν

⟹ ν = 340/1.4 = 242.86 Hz

As the audible range is between 20 Hz – 20,000 Hz

Here, 242.86 Hz < 20,000 Hz

Therefore it is in the audible range.

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Answer 2

Explanation:

frequency=speed/wavelength

=340/(2/100)

=340×100/2

=340×50

=17000