Question

A sound wave travels at a speed of 339m/s-¹ if it's wave length is 1.5cm , what is the frequency of the wave? Will it be audible​

Answer 1

Answer:

Speed ⇒ 339 m/s

Wavelength ⇒ 1.5 cm

now change it to metre

⇒ 1.5 / 100

⇒ 0.015 m

Speed = Wavelength x Frequency

⇒ 339 m/s = 0.015m x Frequency

⇒ Frequency = 339 m/s / 0.015m

= 22600 Hz.

It is more than 20000 Hz. Therefore, it will not be audible to the human ear.