Question

A sound wave of wavelength 1 cm travels in air with a speed of 330 m/s. If the wave is infrasonic wave, answer is 1,
if wave is audible wave then answer is 2 and if wave is ultrasonic wave, answer is 3. Mark your answer 1 or 2 or 3,
whichever is correct​

Answer 1

Answer:

Velocity of sound wave v=339 ms

−1

Wavelength of the waves λ=1.5 cm =0.015 m

∴ Frequency of the waves ν=

λ

v

=

0.015

339

=22.6 kHz

Audible frequency range for human ear lies between 20 Hz to 20 kHz

Thus this waves is not audible.