A sound wave of wavelength 4mm is produced in air, and it travels at a speed of 300m/s. Will it be audible?
A
Yes
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
No
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
Sometimes audible & sometimes inaudible
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Can't say
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is B No We know that velocity of sound wave is given by, v=λf, where λ is wavelength and f is frequency. ⇒f=vλ ⇒f=3004×10−3 ⇒f=75kHz We know audible range of human ear is 20Hz−20kHz. As frequency of this sound is out of this range, therefore it will not be audible.