Question

4. A fire whistle emits a tone of 170 Hz. Take the
speed of sound in air to be 340 m/s. The
wavelength of this sound is about
(1) 0.5 m
(2) 1.0 m
(3) 2.0 m
(4) 3.0 m​

Answer 1

Answer:

1)0.5m is the answer of the Question

Answer 2

The wavelength of this sound is about 2 m.

Explanation:

Frequency of the whistle, f = 170 Hz

The speed of sound in air, v = 340 m/s

Let $\lambda$ is the wavelength of this sound wave. It is given by :

$v=f\times \lambda$

$\lambda=\dfrac{v}{f}$

$\lambda=\dfrac{340\ m/s}{170\ Hz}$

$\lambda=2\ m$

So, the wavelength of this sound is about 2 m. Hence, this is the required solution.

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